Question

use algebra to solve each equation over the domain of -2pi < x < 2 pi

a) 2sec^2x - 2 = 3 + tan x
b) 4sinxcosx=2 - 2cos^2x

Answer 1

trig identities

Answer 2

Hint for b: Factor.

Answer 3

can you do out the question please? i've tried both questions many times

Answer 4

Do you know a relationship between \(\sec^{2}(x)\;and\;\tan^{2}(x)\)? You should.

Answer 5

yes pythagorean.. that = 1

Answer 6

Not quite. That would be sine and cosine. What is the one for tangent and secant?