AM-907

Basic trigonometric identities

A Math · Secondary 3 · Medium · Basic trigonometric identities

Simplify

\dfrac{1}{1-\sin\theta}

in terms of

\sin\theta

only, leaving no surds or fractions in the denominator.

$\sec^2\theta+\tan\theta\sec\theta$
$\sec^2\theta-\tan\theta\sec\theta$
$\dfrac{1+\sin\theta}{\cos\theta}$
$\dfrac{1-\sin\theta}{\cos^2\theta}$

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