Question

Which of the following ratio relates to opposite side of an angle and the hypotenuse in a right-angled triangle?

• A. $cos\theta$
• B. $sin\theta$
• C. $tan\theta$
• D. $sec\theta$

Answer 1

The correct option is B $sin\theta$

We know that for any angle $\theta$,
$sin\theta =\frac{\text{opposite side}}{\text{hypotenuse}}$

Thus, the ratio that relates the opposite side of an angle to the hypotenuse in a right-angled triangle is $sin\theta$.