Sin2A=cos(A-18) then find the valie of A
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Answered by
0
Step-by-step explanation:
sin2A=cos(A-18)
cos(90-A)=cos(A-18)
90-A = A-18
90+18=A+A
2A =108
A=108/2
A=54
That's your answer. I hope it will help you.
Answered by
2
Step-by-step explanation:
sin2A=cos(A-18)
cos(90-2A)=cos(A-18)
90-2A=A-18
-3A=-108
A=36
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