If 7 sin2a 3cos2a 4 show that tan a 1 √ 3 July 8, 2019 16 32 64 128 If 0 a b π/4 and sin(a+b)=24/25 and cos(a-b)=4/5 then find the value of tan2a . if 7sin2a + 3cos2a = 4 show that tan a = 1 √3
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