Math, asked by NININP3183, 1 year ago

If cosA+sinA = 1 then prove that cosA-sinA = 1 or -1.

Answers

Answered by harshit9939

2

cosA+sinA= 1
cosA = 1+sinA
Now,
cosA-sinA
= 1+sinA-sinA
= 1.
proved.

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