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Sin +cos. =1find sin -cos

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Sin +cos. =1find sin -cos

Posted by Shooter Bhai 6 years, 3 months ago

CBSE > Class 10 > Mathematics

2 answers

Himanshu Shekhar 6 years, 3 months ago

(Sin+cos)²=sin²+cos²+2sin.cos ;(1)²=1+2sin.cos ;1=1+2sin.cos ;0=2sin.cos ; now, (sin-cos)²=sin²+cos²-2sin.cos (sin-cos)²=1-0 (sin-cos)²=1 sin-cos = 1

0Thank You

Ayush Negi 6 years, 3 months ago

Sin-cos=-1

0Thank You

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CBSE > Class 10 > Mathematics