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Grade: 11
        
Cos48 . Cos12  How to solve this question 
 I cant understand the last step for this sum
4 months ago

Answers : (1)

Arun
22809 Points
							
Dear student
 
multiply and divide by cos 72
 
cos 12 cos 48 cos 72 / cos 72
 
cos 36 / cos 72 = cos 36 / sin 18
 
now we know these values
4 months ago
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