Math, asked by jyothibalineni85, 4 months ago

lol find the value of cos315°

Answers

Answered by Aarshu2007

3

Answer:

cos 315 = cos ( 360 - 45 ) = cos (2π-45)

We know cos (2π-45) = +cos 45

cos (2π-45) = cos 45 = 1/√2 (ans)

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