Given that \sin\theta = \dfrac{a}{b}, then \cos\theta is equal to — Quest4Learn

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Mathematics Introduction to Trigonometry

Given that

sin θ = \frac{a}{b}

, then

cos θ

is equal to

(a) $\frac{b}{b ^{2} - a ^{2}}$
(b) $\frac{b}{a}$
(c) $\frac{b ^{2} - a ^{2}}{b}$
(d) $\frac{a}{b ^{2} - a ^{2}}$

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