if tanx/tany=1+cos2x/1+sin2x show that sin(3x+y)=7sin(x-y).
Atish Dutta , 9 Years ago
Grade 11
Trigonometry> if tanx/tany=1+cos 2 x/1+sin 2 x show tha...
1 Answers
Vijay Mukati
Last Activity: 9 Years ago
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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