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If (a 2 +b 2) SinA=a 2- b 2, find the value of tanA.

  1. If (a2+b2)SinA=a2-b2, find the value of tanA.

Grade:9

1 Answers

Lab Bhattacharjee
121 Points
7 years ago
\text{HINT: use} \cos x=\pm\sqrt{1-\sin^2x} \ \ \text{to get } \cos A=\pm\dfrac{2ab}{a^2-b^2}

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