how sin65 + cos25 × sin65 - cos25° = 0
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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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