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Find out the value of given questions This question is related to trigonometry

Find out the value of given questions This question is related to trigonometry 

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Grade:12th pass

1 Answers

Arun
25750 Points
5 years ago
Dear student
 
indirectly we are asked for cos 5 theta
 
also tan 2 theta = cot 3 theta
tan 2 theta = tan (90 – 3 theta)
 
hence 5 theta = 90 degree
 
hence
 
cos 5 theta = cos 90 = 0
 

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