trigonometry

[normal raft]

how do i solve this? replacing sin alpha with sqrt of 1- cos^2 alpha doesnt really work

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[worn bane]

Pretty straightforward

Just take the denominator to the other side

[worn bane]

And then simplify

[mental kindle]

A hint if you're having trouble: ||sin(2α) can be expressed in terms of tan(α), which you can express from the given equation.||

[normal raft]

ok thanks

taking denominator to other side worked

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