Let with . Evaluate…

MATHEMATICS · Single correct · A Level · Mathematics · Trigonometry · Trigonometry

Problem

Let

\tan \alpha = \dfrac{3}{4}

with

0<\alpha<\dfrac{\pi}{2}

. Evaluate

\dfrac{\sin \alpha + \cos \alpha}{\sin \alpha - \cos \alpha}

. (a)

\dfrac{3}{4}

(b)

-7

(c)

7

(d)

\dfrac{1}{7}

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