Prove that cos 3theta /cos theta + sin 3theta/ sin theta= 4 cos 2 theta

asked by guest
on Nov 14, 2024 at 8:55 pm



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Prove or disprove that the equation cos⁡(3θ)cos⁡(θ)+sin⁡(3θ)sin⁡(θ)=4cos⁡(2)θ\frac{\cos{\left(3 θ \right)}}{\cos{\left(θ \right)}} + \frac{\sin{\left(3 θ \right)}}{\sin{\left(θ \right)}} = 4 \cos{\left(2 \right)} θ is an identity.


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