Ask Me Help Desk - Solve a trigonometric equation

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Solve a trigonometric equation

34*Sin^2[x]+Sin[2*x]-8*Cos^2[x]==4

Could someone help me with this equation?
Thx

Try using the identities, $sin(2x)=2sin(x)cos(x)$

$1-cos^{2}(x)=sin^{2}(x), \;\ 1-sin^{2}(x)=cos^{2}(x)$

Whittle it sown and use a substitution.

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