Evaluate inverse cosine in a composition by creating a right triangle

The video tutorial explains how to evaluate the sine of the cosine inverse of 1/3 by constructing a triangle. It guides through creating a triangle to find an unknown angle, Theta, and then uses the Pythagorean theorem to calculate the sine of this angle. The tutorial concludes with a final example and mentions a quiz for further practice.

What is the initial problem discussed in the video?

• Finding the cosine of sine inverse of 1/3

• Finding the sine of cosine inverse of 1/3

• Finding the sine of tangent inverse of 1/3

• Finding the tangent of sine inverse of 1/3

Why is it necessary to create a triangle for solving the problem?

• To find the tangent of the angle

• Because the value is not on the unit circle

• Because the value is on the unit circle

• To find the cosine of the angle

What is the unknown angle in the triangle referred to as?

• Alpha

• Theta

• Beta

• Gamma

What equation is used to find the value of y in the triangle?

• y^2 = 1^2 + 3^2

• y^2 = 1^2 - 3^2

• y^2 = 3^2 - 1^2

• y^2 = 3^2 + 1^2

What is the final value of the sine of the angle?

• sqrt(2)/2

• 1/2

• 2 sqrt(2)

• 3/2