For an acute angle in a right triangle

MATHEMATICS · Single correct · CBSE · Mathematics · Introduction to Trigonometry · Introduction to Trigonometry

Problem

For an acute angle

\theta

in a right triangle,

\cos \theta = 0.6

and the side adjacent to

\theta

9\,\text{cm}

long. Calculate the length of the hypotenuse. (a)

13.5\ \text{cm}

(b)

15\ \text{cm}

(c)

12\ \text{cm}

(d)

18\ \text{cm}