Grade 11Trigonometry
if tanx/tany=1+cos2x/1+sin2x show that sin(3x+y)=7sin(x-y).
if tanx/tany=1+cos2x/1+sin2x show that sin(3x+y)=7sin(x-y).
1 Answer
Vijay Mukati
Hint: convert tanX and tanY into corresponding sin/cos form. Then apply componendo and dividendo.use the formulas of 2 sinAcosB and simplyfy it. Thanks.
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