Right Triangle Trigonometry Essentials

What is the sine of an angle in a right triangle defined as?

• Adjacent side over hypotenuse

• Opposite side over adjacent side

• Opposite side over hypotenuse

• Hypotenuse over opposite side

What is the tangent of an angle in a right triangle defined as?

• Hypotenuse over opposite side

• Opposite side over adjacent side

• Adjacent side over hypotenuse

• Opposite side over hypotenuse

What is the secant of an angle, based on its cosine value?

• Hypotenuse over adjacent side

• Adjacent side over hypotenuse

• Cosine of the angle over 1

• 1 over cosine of the angle

What is the cosecant of an angle, based on its sine value?

• 1 over sine of the angle

• Sine of the angle over 1

• Hypotenuse over opposite side

• Opposite side over hypotenuse

If the cosine of alpha is 3/4, what is the secant of alpha?

• 2/3

• 1/3

• 3/4

• 4/3

If the tangent of theta is 4/3, what is the cotangent of theta?

• 3

• 1/3

• 4/3

• 3/4

In a 45-45-90 triangle, if one leg is 1, what is the hypotenuse?

• 1

• Square root of 2

• 2

• 1.5

In a 45-45-90 triangle, if the hypotenuse is square root of 2, what is the length of each leg?

• 2

• 1.5

• Square root of 2

• 1

In a 30-60-90 triangle, what is the length of the hypotenuse if the shorter leg is 1?

• 3

• Square root of 3

• 2

• 1

In a 30-60-90 triangle, if the longer leg is square root of 3, what is the length of the shorter leg?

• Square root of 2

• 3

• 2

• 1