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OpenStudy (anonymous):
simplify (cotu)(sinu)+(tanu)(cosu)
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OpenStudy (rational):
hint : \(\cot x = \dfrac{\cos x}{\sin x}\)
OpenStudy (anonymous):
am i right then in thinking that it would reduce down to cosx+sinx? after changing both cotx and tanx?
OpenStudy (rational):
Yep ! it reduces to `cosu + sinu`
OpenStudy (rational):
good job !!
OpenStudy (anonymous):
Cheers! Thanks a bunch
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OpenStudy (rational):
yw
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