Question

(a) If theta is in standard position, then the reference angle theta is the acute angle formed by the terminal side of theta. So the reference angle for 0 = 100° is theta = ° and that for 0= 200° is theta= ° (b) If theta is any angle, the value of a trigonometric function of theta is the same, except possibly for sign, as the value of the trigonometric function of theta. So sin(100°) = sin( °), and sin(200°) = -sin( °). Need Help? Read It​

Answer 1

Explanation:

There seems to be an error in the given statements. Here are the corrected statements:

(a) If theta is in standard position, then the reference angle theta is the acute angle formed by the terminal side of theta. So the reference angle for 100° is theta = 80° and that for 200° is theta = 20°.

(b) If theta is any angle, the value of a trigonometric function of theta is the same, except possibly for sign, as the value of the trigonometric function of its reference angle. So sin(100°) = sin(80°), and sin(200°) = -sin(20°).