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Phoebehall02:
To solve the equation 3sin(2x)=5cosx you should rewrite it as
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AZ:
do you know the identity for sin(2x)
AZ:
\(\sin(2x) = 2\sin(x)\cos(x)\)
AZ:
How would you solve it now? You have a cos(x) on both sides. What can you simplify your equation to?
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