Math, asked by nithyasreepothuri, 5 months ago

Prove that
Sint A-CostA=2sin²A-1

Answers

Answered by shweta7289

1

Answer:

from right hand side

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

sin^2A - cos^2A

(sin A+ cosA) (sinA-cosA)

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