Hi there,

Can anyone give me help to start off this problem please?

Triangle PQR Angle PRQ = 3x; Angle PQR = x

I have to prove that p = 4q cos x cos 2x.

Thanks

Cromlix

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- February 6th 2011, 11:18 AMcromlixTrigonometric Problem
Hi there,

Can anyone give me help to start off this problem please?

Triangle PQR Angle PRQ = 3x; Angle PQR = x

I have to prove that p = 4q cos x cos 2x.

Thanks

Cromlix - February 6th 2011, 11:29 AMskeeter