Math, asked by VAMPIRERAJ, 9 months ago

cos² 57° + cos² 33° = 1

Hurry guys

Answers

Answered by challu

4

cos²A=1-sin²A

cos² 57 +1-sin² 33=1

cos² 57-sin²33=0

sin²33-sin²33=0

0=0

HENCE PROVED....

HOPE IT'S HELPFUL...

Answered by mirajulhasmin66

2

Answer:

LHS=cos² 57⁰ + cos² 33⁰

=cos² 57⁰ + cos² (90⁰-57⁰)

= cos² 57⁰ + sin² 57⁰

= 1=RHS(Proved)

PLEASE MARK AT BRAINLIST

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