Math, asked by koushikmitra1, 1 year ago

sin45cos65+sin135cos115=1. prove it

nikki1231: in question rhs is zero or one

koushikmitra1: sorry it was zero...thanks

Answers

Answered by nikki1231

given,
sin45cos65+sin135cos115
= sin45cos65 + sin(180-45)cos(180-65)
= sin45cos65+sin45(-cos65)
= sin45cos65-sin45cos65
= 0
I hope you understand
pls mark it as brainliest answer

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