Trigonometry Answers

if a 21 inches diameter pulley that is being driven by an electric motor abd running at 1600 revolution per minutes is connected by belt to a 5 inch diameter pulley to drive a saw. what is the speed of the saw in revolution per minutes?

How fast is a bicyclist traveling in miles per hour if his tires are 27 inches in diameter and his angular speed is 5 pie radius per seconds

A surveyor stands at point A, which is due south of a tower OT of height h m. The angle of elevation of the top of the tower from A is 45 degrees. The surveyor then walks 100 m due east to point B, from where she measures the angle of elevation of the top of the tower to be 30 degrees.

P.S the answer says that the bearing is 130 degrees.

PLEASE PLEAS HELP ME I am really struggling to figure out how...

Let (sin x)(cos x) = .35 and sin x + cos x = 1.30. Which is (csc x) + (sec x)?

A. 2.17
B. 3.71
C. 3.77
D. 2.71

Let sin x = .22. Which sec x?

A. 1.03
B. 1.13
C. 1.33
D. 1.30

Let tan A = 7 and tan B = 9. Which is cot A + cot B?

A. 0.06
B. 0.6
C. .126984
D. 0.25

Let tan tan x = 2 . Which is cot x?

A. 0.5
B. 1
C. 1.5
D. 2

At what point the graph of f(x) = 2cos x – 1 intersects the x-axis?

need help verifing this...
cosx + senx + ctgx = cscx

If the central angle =10 rad, and the area of the sector formed is 25 square units, find the area of the circle.