Warm up 12/4 Trig ratios

Front

What are the three primary trigonometric ratios?

Back

Sine (sin), Cosine (cos), Tangent (tan)

Front

What does SOH CAH TOA stand for?

Back

SOH: Sine = Opposite/Hypotenuse, CAH: Cosine = Adjacent/Hypotenuse, TOA: Tangent = Opposite/Adjacent

Front

How do you calculate the sine of an angle?

Back

Sine of an angle = Opposite side / Hypotenuse

Front

How do you calculate the cosine of an angle?

Back

Cosine of an angle = Adjacent side / Hypotenuse

Front

How do you calculate the tangent of an angle?

Back

Tangent of an angle = Opposite side / Adjacent side

Front

What is the relationship between sine and cosine?

Back

Sine and cosine are complementary: sin(θ) = cos(90° - θ) and cos(θ) = sin(90° - θ).

Front

What is the purpose of using a calculator in trigonometry?

Back

To compute trigonometric ratios and solve for unknown angles.

Front

When should a calculator be set to degree mode?

Back

When measuring angles in degrees, which is common in most trigonometric problems.

Front

What is the inverse tangent function used for?

Back

To find the angle when the opposite and adjacent sides are known: x = tan⁻¹(opposite/adjacent).

Front

How do you find the missing angle in a right triangle?

Back

Use trigonometric ratios or the inverse functions based on known side lengths.