If sin (2A+ 45°) = cos(30-A) and 0°<A<90°. find the value of A
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sin (2A+ 45°) = cos(30-A)
Sin(2A+45°) = sin(90 - 30 +A)
By comparing
(2A+45°) =(90 - 30 +A)
2A+45° = 60 +A
A =60-45
A=15°
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