Approximate the measure of the indicated angle theta measure

Approximate the measure of the indicated angle, theta, measured in radians. Approximate the value of sin(theta). Approximate the value of cos(theta).

Solution

(a)Tan x = 0.3/1 = 0.3

so, x = tan-1(0.3)

x = 0.29 radians

= 2 pi - 0.29 = 5.99 radians

(b) sin 5.99 = -0.289

(c) cos 5.99 = 0.957