Question

pls solve this trigonometry

Answer 1

Answer:

Expanded: h cos^2(A)-h sin^2(A)=1-2 sin^2(A)

Solved for h: cos(2A)/(cos(A)+sin(A))(cos(A)-sin(A))

Solved for A: A=π/4 + πn/2

Simplified: h cos(2A)= cos (2A)

Step-by-step explanation:

Next time use Mathway for this. It can help you with any subject of math.

Hope this helps.