Math, asked by Satishyadav2543, 11 months ago

(cosA+SinA)²(cosA-sinA)²=2

Answers

Answered by inspirationalgdandyt

1

Answer:

Your problem has a bit of a error here is the solution without the error

Step-by-step explanation:

(cosA+SinA)²(cosA-sinA)²=2

from lhs

(cosA+SinA)²+(cosA-sinA)²

(cos^2A+2cosAsinA+sin^2A)+(cos^2A-2cosAsinA+sin^2A)

(1+2cosAsinA)+(1-2cosAsinA)

1+2cosAsinA+1-2cosAsinA

2=R.H.S

Prooved

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