Finding Missing Angles in Right Triangle Trigonometry

What is the first step in finding a missing angle in a right triangle?

• Label the sides of the triangle

• Draw the triangle

• Calculate the hypotenuse

• Find the area of the triangle

Which trigonometric function is used when given the opposite and hypotenuse sides?

• Sine

• Tangent

• Cosine

• Secant

What is the value of the angle when the sine of the angle is 8/13?

• 60 degrees

• 30 degrees

• 45 degrees

• 37.98 degrees

What mode should your calculator be in when calculating angles in degrees?

• Radian mode

• Degree mode

• Scientific mode

• Standard mode

Which trigonometric function is used when given the adjacent and hypotenuse sides?

• Cosine

• Sine

• Tangent

• Cosecant

What is the value of the angle when the cosine of the angle is 12/15?

• 45 degrees

• 36.87 degrees

• 30 degrees

• 60 degrees

Which trigonometric function is used when given the opposite and adjacent sides?

• Cotangent

• Tangent

• Cosine

• Sine

What is the value of the angle when the tangent of the angle is 2/7?

• 15.95 degrees

• 45 degrees

• 30 degrees

• 60 degrees

What should you do if the third number after the decimal place is 5 or more?

• Round the second number up

• Ignore the third number

• Round the second number down

• Leave the second number the same

What should you do if the third number after the decimal place is 4 or less?

• Round the second number down

• Leave the second number the same

• Round the second number up

• Ignore the third number