how can i simplify this equation using trig identities/formulas:
cosy = sqrt{sin^{4}x + 4cos^{2}x} - sqrt{cos^{4}x + 4sin^{2}x}
Skylar wrote:cosy = sqrt{sin^{4}x + 4cos^{2}x} - sqrt{cos^{4}x + 4sin^{2}x}
Skylar wrote:I think we are just supposed to simplify the expression on the right side of the equation. The instructions are to "express y in terms of x"