Unit 5/6 Test Review: Trigonometry and Forces

Vocabulary and key formulas covering right triangle trigonometry and forces from the Unit 5/6 Test Review.

Hypotenuse

Opposite right angle (longest side)

Opposite

Across from angle

Adjacent

Beside the angle

Theta

Angle

Pythagorean Theorem

$$a^2 + b^2 = c^2$$

SOH

$$\sin(\theta) = \frac{O}{H}$$

CAH

$$\cos(\theta) = \frac{A}{H}$$

TOA

$$\tan(\theta) = \frac{O}{A}$$

Normal Force

Symbolized by $F_N$; direction is perpendicular to surface

Frictional Force

Equation: $F_f = \mu F_N$; direction is opposite of motion

Gravitational Force

Equation: $F_g = mg$; direction is down (towards center of earth)