Thread: Trigonometry Equations Question

Solve each of the following equations for value x in the range 0 < x< 360.

(a) 8 sin^2 x + 2 cos x - 5 = 0

(b) 4 sec^2 x - 3 tan^2 x = 5 tan x

I just need the first 3 steps to solve the question. Thanks.

For the first: . Substitute, simplify and solve the quadratic.

For the second: . Substitute, simplify and solve the quadratic.