What values of c and d make the equation true?

Write the fraction 9/50 as a decimal if needed round to the nearest hundredth

1) what is the measure of the exterior angle, ∠uvw ? 2) in triangle man, what is the measure of the exterior angle at n (in degrees)?

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).