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cos24 + cos5 + cos175 + cos204 + cos300 =? (all angles are in degree)

cos24 + cos5 + cos175 + cos204 + cos300 =? (all angles are in degree)

Grade:12

1 Answers

Shivam Deswal
11 Points
3 years ago
Answer is ½
Hint: first solve (cos5+cos175)+(cos24+cos204)+cos300.
cos5+cos175=0
cos24+cos204=0
cos300=cos60=1/2
 

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