Learn how to find the six trig functions of a right triangle

The video tutorial covers the basics of trigonometric functions, including sine, cosine, and tangent. It explains how to identify the sides of a triangle—adjacent, opposite, and hypotenuse—and uses the Pythagorean theorem to find missing side lengths. The tutorial also demonstrates how to calculate trigonometric ratios and introduces reciprocal functions like cosecant, secant, and cotangent. The goal is to help students become proficient in solving trigonometric problems quickly and efficiently.

What is necessary to evaluate the sine, cosine, or tangent of an angle?

• Knowing the length of the hypotenuse only

• Understanding the adjacent, opposite, and hypotenuse sides

• Using the sine rule

• Applying the cosine rule

Which side of a triangle is always opposite the 90-degree angle?

• Opposite

• Hypotenuse

• Theta

• Adjacent

How is the sine of an angle calculated in a right triangle?

• Opposite over hypotenuse

• Opposite over adjacent

• Hypotenuse over opposite

• Adjacent over hypotenuse

What is the reciprocal of the sine function called?

• Secant

• Cosecant

• Cotangent

• Tangent

Why is it important to rationalize the denominator in trigonometric calculations?

• To avoid having a radical in the denominator

• To ensure the numerator is a whole number

• To make the calculation faster

• To simplify the expression