Find acute angles A and B, if sin (A + 2B) = 
and cos (A + 4B) = 0, A > B.
On solving (1) and (2), we get
A = 30°, B = 15°
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Find acute angles A and B, if sin (A + 2B) = and cos (A + 4B) = 0, A > B.
On solving (1) and (2), we get
A = 30°, B = 15°