Hello!

This is a question I couldn't solve.

If A is an obtuse angle in a triangle and sin A = 5/13, calculate the exact value of sin 2A.

I would appreciate your help,

Amine :)

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- Nov 19th 2009, 02:21 AMAminekhadirObtuse Angle and Sine
Hello!

This is a question I couldn't solve.

If A is an obtuse angle in a triangle and sin A = 5/13, calculate the exact value of sin 2A.

I would appreciate your help,

Amine :)

- Nov 19th 2009, 03:12 AMmathaddict