exam Maths Puzzle Numerical Ability

Solve for x:
sinx=cos2x

show work please!
i need by tonight!
thanks so much if you answer!

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exam Other Question

Simplify

y to 0power x to -8power/x -7power z((y 5power)-2power/(z 0power)9power - x to 11power/y to 4 power) Factor Completely? 4x^2+9, & 5t^2 + c^2