Learn how to evaluate the six trig functions of a 30 60 90 triangle

The video tutorial covers the identification of triangle sides, focusing on hypotenuse, adjacent, and opposite sides. It introduces basic trigonometric functions: sine, cosine, and tangent, and their reciprocal functions: cosecant, secant, and cotangent. The tutorial also explains the process of rationalizing denominators in trigonometric expressions, emphasizing the importance of simplification in mathematical calculations.

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

• Base

• Hypotenuse

• Opposite side

• Adjacent side

In a right triangle, what is the cosine of a 60-degree angle?

• Hypotenuse over opposite

• Opposite over adjacent

• Adjacent over hypotenuse

• Opposite over hypotenuse

What is the tangent of a 60-degree angle in a right triangle?

• sqrt 3 / 2

• 2 / sqrt 3

• sqrt 3

• 1

What is the reciprocal of the sine function called?

• Secant

• Tangent

• Cotangent

• Cosecant

When rationalizing the denominator of 1/sqrt 3, what is the result?

• 3/sqrt 3

• sqrt 3 / 3

• 1/3

• sqrt 3