prove this equation its urgent
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COS 90° = 0
Proof :-
cos1° x cos2° x ........ x cos 90° x ....... x cos 179° x cos 180°
= cos 1° x cos 2° x ....... x 0 x ........ x cos 180 °
= 0
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Answer:
UPPER ANSWER IS CORRECT
Step-by-step explanation:
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