Right Triangle Trigonometry Precalculus

Which trigonometric function is the opposite over the hypotenuse?

• Tangent

• Sine

• Cosine

• Secant

Answer explanation

Sine is written as sin(x).

Which trigonometric functions is the opposite over the adjacent?

• Tangent

• Sine

• Cosine

• Secant

Answer explanation

Tangent is written as tan(x).

Which side is the hypotenuse?

• AB

• BC

• CA

Answer explanation

The hypotenuse is the side directly across from the right angle.

Which side is the adjacent?

• AB

• BC

• CA

Answer explanation

The adjacent is the side next to the reference angle, which is in this case the theta.

What is the tan of X?

• ³⁰/₄₀

• ³⁰/₅₀

• ⁴⁰/₃₀

• ⁴⁰/₅₀

Find x.

• 10

• 5

In right triangle ABC, m∠C =90°. If cos B= 5 ⁄ 13, which function also equals 5 ⁄ 13?

• tanA

• tanB

• sinA

• sinB

In the figure shown, if sin(R) = 5/8 and r=2, then what is q?

• 16/5

• 5/4

• 5

• 5/16

What is the sine of angle C?

• 7/24

• 7/25

• 24/25

• 25/24

What is the tangent of angle C?

• 7/25

• 25/7

• 7/24

• 24/7