Math, asked by yaminireddy6736, 9 months ago

(Sinx + cosx) + (sinx - cosx)

Answers

Answered by nedrad14

1

Step-by-step explanation:

(sinx+cosx)+(sinx-cosx)=

sin²x-cos²x=

sin²x-(1-sin²x)=

sin²x-1+sin²x=

2sin²x - 1

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