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Trigonometry
Page 3
Questions (13,517)
A bridge across a valley is 150 m in
length. The valley walls make angles of 60° and 54° with the bridge that spans it, as
6 answers
asked by
Dylan
4,214 views
Prove that the equation is an identity.
cos x - cos 5x= 4 sin 3x sin x cos x
3 answers
asked by
Anonymous
1,114 views
two wires support a pole in opposite directions. they make angles of 36° and 42° with the horizontal, and the points where
2 answers
asked by
kenneth
543 views
A man is in a tree house 10 ft. above the ground. He is looking at the top of another tree that is 22 ft. tall. The bases of the
5 answers
asked anonymously
81 views
Use the graph of y = sin2θ to find the value of sin 2θ for θ = radians. The curve has x-intercepts at every integer multiple
1 answer
asked anonymously
54 views
Determine the exact value of cos 465 degrees
a) √3 + √2/2 b) √2 + √3√2/4 c)√2 - √3√2/4 d)2+√2-√3√2/4
5 answers
asked by
Melinda
5,192 views
find the equation for the cosine function that has an amplitude of 3/5, a period of 3pi/2 and a y-intercept of 5.
4 answers
asked by
Jon
5,181 views
A search and rescue aircraft, travelling at a speed of 240 km/h starts out at a heading of N 20 degrees West. After travelling
3 answers
asked by
Sara
1,647 views
A 20 m vertical telephone pole is standing on a 15 degree slope. One guy wire is attached 30 m up the slope and another guy wire
6 answers
asked by
Emily J
3,630 views
A man is standing in the corridor of a ten storey building and looking at a tall tree in front of the building he sees the top
5 answers
asked by
oyinkansola
1,414 views
3. At the end of a dock, high tide of 14 m is recorded at 9:00 a.m. Low tide of 6 m is recorded at 3:00 p.m. A sinusoidal
7 answers
asked by
Peter
3,417 views
1. A man stands 12 feet from a statue. The angle of elevation from the eye level to the top of the statue is 30 degrees, and the
5 answers
asked by
Mz. Suzie
4,349 views
Find the period and the amplitude of the periodic function
y=3cos 4x
5 answers
asked by
kenny
4,698 views
A. Find simpler, equivalent expressions for the following. Justify your answers.
(a) sin(180 + è) (b) cos(180 + è) (c) tan(180
5 answers
asked by
sally
2,981 views
An observer in a lighthouse 48.8 m above sea level saw two vessels moving directly towards the lighthouse. He observed that the
6 answers
asked by
Daniela
4,127 views
In triangle RST, angle S is a right angle and cdc R=13/12. What is Tan T?
answers: 13/5, 12/13, 12/5, 5/12
4 answers
asked by
Sam
2,275 views
The feet of two vertical poles of heights 3m and 7m are in line with a point P on the ground the smaller pole being between the
5 answers
asked by
Foluke
2,081 views
Given that, tanØ=5/12,
Using trigonometric ratio, please solve ; (1). SinØ (2). SinØ + Cos Ø (3). (Sin^2 Ø / Cos Ø)/(Sin^2
1 answer
asked anonymously
39 views
If sinθ=12
sin = 1 2 , which could not be the value of θ ?(1 point) Responses 390° 390 ° 210° 210 ° 150° 150 ° 30°If
1 answer
asked by
kaite marie
46 views
sin(θ − ϕ);
tan(θ) = 5/12 θ in Quadrant III, sin(ϕ) = − sqaure root 10/10 ϕ in Quadrant IV I tried this numerous times
7 answers
asked by
Rachel
7,076 views
The lengths QR, RP, and PQ in triangle PQR are often denoted p, q, and r, respectively.
What do the formulas 1/2 pq sinR and 1/2
5 answers
asked by
sarah
3,772 views
find sin theta and tan theta if cos theta = 2/3 and cot theta is >0
and find cos theta and cot theta if sin theta = 1/3 and tan
5 answers
asked by
skye
10,711 views
A sinusoidal function has an amplitude of
4 units, a period of 90°, and a maximum at (0, 2). a) Represent the function with an
4 answers
asked by
Evan
1,730 views
A tower 150 m high is situated at the top of a hill. At a point 650 m down the hill, the angle
between the surface of the hill
6 answers
asked by
bella velasco
3,694 views
There is an angle 𝜃 in quadrant I such that tan 𝜃 = 2/3. Convert the complex number z = 5 cis 𝜃 from polar to
4 answers
asked by
Bryn
461 views
A radio tower 500 feet high is located on the side of a hill with an inclination to the horizontal of 5 degrees. How long should
5 answers
asked by
PLEASE HELP ME
4,206 views
Find an angle between 0 & 360 degrees that is coterminal 820 degrees.
4 answers
asked by
Dennis
3,037 views
Suppose f(x) = sin(pi*cosx) On any interval where the inverse function y = f –1(x) exists, the derivative of f –1(x) with
9 answers
asked by
Thomas
3,901 views
if sin p = 3/5 and p is an acute angle, what is the value of tan p.
10 answers
asked by
Sofa
4,504 views
A man walks directly from point A towards the foot of a tall building 240m away. After covering 180m, he observes that the angle
9 answers
asked by
king
2,563 views
find the minimum height above the surface of the earth so that the pilot at point a can see an object on the horizon at c 125
5 answers
asked by
ellen
2,991 views
A vertical pole is standing on a slope that is inclined at an angle 8 degrees to the horizontal and casts a shadow that is 82
4 answers
asked by
Nik
2,505 views
A telephone pole that is 14ft y’all has fallen against a house. If the top of the telephone pole touches the house 8ft. Above
7 answers
asked by
John
3,406 views
a boy standing 70m away from a flag post observe that the angle of elevation of the top and bottom of a tower on top of the flag
7 answers
asked by
Tundr
4,740 views
A surveyor sights the far bank of a river at an angle of 110˚ to the near bank. She then moves 75 feet upriver and sights the
14 answers
asked by
Kevin
4,738 views
The Angle of depression of Boat A from the top of a cliff which is 32 m high is 24 degree 15 minutes .The angle of depression of
5 answers
asked by
Mariel
3,024 views
John wishes to determine the height of a flagpole. He takes a sighting of the top of the flagpole from point P. He then moves
4 answers
asked by
Shane
2,138 views
Three towns a, b, and c are such that the distance between a and b is 50km and the distance between a and c is 90km. if the
7 answers
asked by
value
3,466 views
find the period, amplitude and phase angle of the function 2y=3 sin(1/2x-60)
4 answers
asked by
meee
476 views
If sin a=0.31 cos a=0.95 sin b=0.47 and cos b=0.88 what is sin (a+b)?
0.78 -0.17 0.98 0.72
4 answers
asked by
John
2,587 views
A hiker is 400 meters away from the base of the radio tower. The angle of elevation to the top of the tower is 46 degrees . How
6 answers
asked by
Daniela
2,765 views
Angle θ is an acute angle of a right triangle. Determine the value of cot θ given the value of sin θ below. what is sin θ
2 answers
asked anonymously
59 views
A plane ascends at a 40° angle. When it reaches an altitude of one hundred feet, how much ground distance has it covered? To
5 answers
asked by
Anonymous
6,185 views
find an expression for sin (5 theta) as a fifth degree polynomial in the variable sin(theta) ?
4 answers
asked by
aparajita
6,097 views
Given that 3cos2x + 17sinx = 8, find the exact value of sinx .
5 answers
asked by
Sarah
801 views
You are standing at the peak of a mountain that is 14000 feet above sea level. The angle of depression from this peak to a
5 answers
asked by
Sarah
1,936 views
A student stands 20m away from the foot of a tree and observes that the angle of elevation of the top of the tree , measured
4 answers
asked by
Anonymous
702 views
Find the values of the inverse function in radians.
tan^-1(0.09) answer choices: a.-0.09+2pi n b. no such angle exists c.-1.48+
4 answers
asked by
Steve
2,862 views
A tunnel for a new highway is to be cut through a mountain that is 260 feet high. At a distance of 200 feet from the base of the
4 answers
asked by
Marie
2,460 views
Two fire stations,P and Q,are 20 km apart. A ranger at station Q sees a fire 15.0 km away. If the angle between the line PQ and
6 answers
asked by
Nada
3,735 views
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