In which quadrant does -285° angle lie?

To convert radians to degrees, we use the formula of ___________.

Using a calculator, express 95° 45 ‘ 45 ” in decimal degrees.

How many degrees is 1 and 1/5 of a complete revolution?

How many radians is 11/5 of a complete revolution?

What is the length of an arc of a circle with radius 4 cm that subtends a central angle of 216°?

Find the length of an arc of a circle with a radius of 6/π cm that subtends a central angle of 99°.

What is the smallest positive angle coterminal with 2110° ?

 What is the coterminal angle of 85° ?

If tan A=4/5, determine 2sin A - cosA/3cos A.

Given sec θ = - 25/24 and   π ≤  θ ≤ 3π/2, find sin θ + cos θ.

What is the reference angle of - 29π / 6?

For what angle θ in the third quadrant is cos θ= sin 5π /3?

If cos θ > 0 and tan θ = -2/3.  Find sec θ + tan θ/ sec θ - tan θ.

What is sec^2 θ - csc^2 θ, if the terminal point of an arc of length θ lies on the line joining the original at the point (2, -6)?

If 3π/2 < θ < 2π, find θ if cos θ = sin 2π/3.

Identify the point on the unit circle corresponding to an angle of π/6 radians in standard position.

In what quadrant does it lie the angle -7π / 6?

Which point on the unit circle corresponds to tanθ = θ?

Find all values of x in the interval [-2π, 2π] that satisfy the equation (sin x - 1) (sin x + 1) =0.

Solve: 2 cos x tan x = 2 cos x.

Solve for x ∈ [0,2π): sin 2x = sin x.

Solve for x ∈ [0,2π): 2cos^2 x = 1 + sin x.

Solve: sin^2 x + 5 cos^2 x/2 = 2.

A lighthouse at sea level is 34 mi from a boat. It is known that the top of lighthouse is 42.5 mi from the boat and that x = r cos θ, where x is the horizontal distance, r is the angle of depression from the top of lighthouse. Find θ.

If a projectile, such as a bullet, is fired into the air with an initial velocity at an angle of elevation θ, then the height of the projectile at time is given by h(t) = - 16t^2 + vt cos θ meters. If the initial velocity is 109 meters per second, at what angle should the bullet be fired so that its height is 45 meters above the floor in 2 seconds.

2 sin x/2 cos x/2 is equivalent to

Simplify cos^2 15 degrees - sin^2 15 degrees. 

If tan x = 6/8, what is cos 2x, given that  0 ≤ x ≤ π/2?

cos (x - 2π) is equivalent to