Math, asked by Pakali5890, 9 months ago

If sinA+cosA=p,then show that p^2-1/2=sinA*cosA

Answers

Answered by sandy1816

1

Step-by-step explanation:

given,sinA+cosA=p

LHS

(p²-1)/2

=(sinA+cosA)²-1/2

=1+2sinacosA-1/2

=2sinAcos/2

=sinAcosA

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