Find sin(2x), cos(2x), and tan(2x) from the given information. tan(x) = −15 /8 , x in Quadrant II

Question

sin(2x) =

cos(2x) =

tan(2x) =

Answer 1

x = 151.9275°

sin(2x) = -0.8304

cos(2x) = 0.5571

tan(2x) = -1.4907

Answer 2

Draw and label a diagram.

Use Pythagoras the the definition of tangent to determine sin x and cos x.

Substitute values into the appropriate formula.