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MATH / If (cos3x)/(cosx)=(1)/(3), then determine (sin3x)/(sinx).

Problem

Answer published by the source. Consult the official source to check your work against its answer.

problem

If cos3xcosx=13,\frac{\cos 3x}{\cos x} = \frac{1}{3}, then determine sin3xsinx.\frac{\sin 3x}{\sin x}.
Plain-text mathematical notation (without MathML)
If (cos3x)/(cosx)=(1)/(3), then determine (sin3x)/(sinx).
Original LaTeX notation
If $\frac{\cos 3x}{\cos x} = \frac{1}{3},$ then determine $\frac{\sin 3x}{\sin x}.$

level

Level 3

type

Precalculus

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Source and history

task_id
2666384e-d89b-555d-a725-c8c85c54dfaa
task_key
precalculus--test--2666384e-d89b-555d-a725-c8c85c54dfaa
task_revision_id
1
config / split
precalculus / test

Official source

initial import