Finding Missing Angles in Right Triangles

Which side is adjacent to the given angle in a right triangle?

• None of the above

• Opposite side

• Hypotenuse

• Adjacent side

What trigonometric function is associated with the opposite side over the hypotenuse?

• Cotangent

• Tangent

• Sine

• Cosine

What is the inverse operation of squaring a number?

• Subtraction

• Square root

• Division

• Multiplication

How do you solve an equation involving the sine of an angle?

• Add sine

• Divide by sine

• Multiply by sine

• Use sine inverse

What is the correct way to find the angle using sine inverse?

• sin(x) = opposite/adjacent

• sin(x) = adjacent/hypotenuse

• sin(x) = opposite/hypotenuse

• sin(x) = hypotenuse/opposite

What is the result of applying sine inverse to 6/18?

• 60 degrees

• 30 degrees

• 19.47 degrees

• 45 degrees

How do you calculate angle B in a triangle?

• sine inverse of opposite/hypotenuse

• 180 - sine inverse result - 90

• 180 - cosine inverse result

• 180 - angle A - 90

What is the cosine of an angle equal to in a right triangle?

• Hypotenuse over adjacent

• Adjacent over opposite

• Opposite over hypotenuse

• Adjacent over hypotenuse

What is the value of angle B found directly using cosine inverse?

• 19.47 degrees

• 70.53 degrees

• 90 degrees

• 45 degrees

What operation is necessary to solve for an angle when given a trigonometric function of that angle?

• Inverse trigonometric function

• Subtraction

• Multiplication

• Addition