Angles in Right Triangles

The video tutorial explains how to find angles in a right triangle using trigonometric functions. It covers the use of cosine and sine functions to determine angles B, H, and I by applying the inverse function on a calculator. The tutorial emphasizes the importance of ensuring the calculator is in the correct mode (degrees or radians) and highlights the complementary nature of angles in a right triangle.

Which trigonometric function is used to find angle B when given the adjacent and hypotenuse?

• Sine

• Cosine

• Tangent

• Secant

What is the value of angle B when the adjacent side is 4 and the hypotenuse is 5?

• 53.1 degrees

• 36.9 degrees

• 45 degrees

• 60 degrees

How do you find angle C if angle B is 36.9 degrees in a right triangle?

• Divide 36.9 by 2

• Multiply 36.9 by 2

• Add 36.9 to 90

• Subtract 36.9 from 90

Which trigonometric function is used to find angle H when given the opposite and hypotenuse?

• Sine

• Cosine

• Tangent

• Cotangent

What is the value of angle H when the opposite side is 15 meters and the hypotenuse is 17 meters?

• 45 degrees

• 28.1 degrees

• 61.9 degrees

• 90 degrees

Which trigonometric function is used to find angle I when given the adjacent and hypotenuse?

• Sine

• Secant

• Cosine

• Tangent

What is the value of angle I when the adjacent side is 15 and the hypotenuse is 17?

• 61.9 degrees

• 90 degrees

• 45 degrees

• 28.1 degrees

What is the sum of angles in a triangle?

• 360 degrees

• 270 degrees

• 180 degrees

• 90 degrees

If one angle in a right triangle is 61.9 degrees, what is the other acute angle?

• 45 degrees

• 28.1 degrees

• 61.9 degrees

• 90 degrees

What is the relationship between the two acute angles in a right triangle?

• They are congruent

• They are complementary

• They are equal

• They are supplementary