I must be having a birdbrain day today.
Question: Find the values of x in the interval 0<x<360 for which Sin2x + Cos2x =0
I have attempted to square and then sub in using the identity: sin^2x + cos^2x = 1, but this just ends with 1 as both sin and cos just cancel each other out, and I don’t see a clear way of using tan x=sin x/ cos x .
Is there something that I am missing?