Math, asked by srimaroy, 7 months ago

how sin65 + cos25 × sin65 - cos25° = 0

Answers

Answered by Anonymous

1

Heyy dear♥️

(sin 65° + cos 25°) (sin 65° - cos 25°) = 0

⟹ sin² 65° - cos² 25° = 0

⟹ sin²(90° - 25) - cos² 25° = 0

⟹ cos² 25° - cos² 25° = 0

⟹ 0 = 0

HENCE PROVED

Thank you :)

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