Math, asked by hellboy9090, 1 year ago

cos2x +1=? and if you know other functions of trignometry for class 11th to make questions easy plz also tell them

Answers

Answered by BrainlyPopularman

1

$1 + cos2x = 2 {cos}^{2} x$

Answered by muskan0011

1

1+cos2x= 2cos²x

since, cos2x= 2cos²x-1

(it is a trigonometric formula)

wait I am using a attachment as well for your answer hope that the attachment will help you ..

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