Math, asked by Diyacharlotte721, 11 months ago

If cos 7A=sin(A-6) where 7A is an acute angle, find the value of A

Answers

Answered by zoya0710

18

Step-by-step explanation:

cos7a= sin (A-6)

sin (90-7a)=sin (a-6)

90-7a=a-6

8a=96

a=96/8

=12

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