Math, asked by tauheedkhantk9889456, 1 year ago

If cosA - sinA= √2sinA ,then prove that cosA + sinA = √2 cosA

Answers

Answered by sharmaprashant7897
9

Answer:cosA=√2sinA+sinA

CosA=sinA(√2+1)

CosA/√2+1=sinA

CosA/√2+1×√2-1/√2-1=sinA

√2cosA-cosA/2-1=sinA

√2cosA-cosA=sinA

√cosA=sinA+cosA


Similar questions