How to apply sine to find the missing side of a triangle

The video tutorial explains how to solve a trigonometry problem involving a right triangle. The teacher guides students through identifying the hypotenuse, adjacent, and opposite sides of the triangle. The focus is on using the sine function to find the length of the opposite side when given an angle and the hypotenuse. The teacher also briefly discusses the roles of cosine and tangent in trigonometry.

In a right triangle, which side is always opposite the right angle?

• Opposite

• Adjacent

• Hypotenuse

• Base

Which trigonometric function is used when you have the opposite side and hypotenuse?

• Secant

• Tangent

• Sine

• Cosine

If the hypotenuse is 12 and the angle is 15 degrees, what is the length of the opposite side using sine?

• 10.00

• 7.50

• 3.11

• 5.00

Why can't cosine be used in this problem to find the length of the opposite side?

• Cosine requires the angle

• Cosine requires the adjacent side

• Cosine requires the opposite side

• Cosine requires the hypotenuse

Which trigonometric function involves both the opposite and adjacent sides?

• Tangent

• Cosecant

• Sine

• Cosine