4/22 FLASHCARD 9.4-.9.5 Sine, Cosine, tangent

Front

What does the cosine ratio represent?

Back

Adjacent side (A) / Hypotenuse (H)

Front

What is the correct setup to solve for x if sin 24 = x / 12?

Back

This setup is incorrect; the correct setup is tan 24 = x / 12.

Front

Which side is the opposite side of angle θ in a right triangle?

Back

The side opposite to angle θ is side b.

Front

What is the correct setup to solve for x if cos 72 = 6 / x?

Back

This setup is correct.

Front

If you are given the two sides that are not the hypotenuse, which trig function should you use?

Back

Tangent (tan) should be used.

Front

Define sine in terms of a right triangle.

Back

Sine (sin) = Opposite side (O) / Hypotenuse (H)

Front

Define cosine in terms of a right triangle.

Back

Cosine (cos) = Adjacent side (A) / Hypotenuse (H)

Front

Define tangent in terms of a right triangle.

Back

Tangent (tan) = Opposite side (O) / Adjacent side (A)

Front

What is the relationship between sine, cosine, and tangent?

Back

tan(θ) = sin(θ) / cos(θ) for any angle θ.

Front

How do you find the hypotenuse using sine?

Back

Hypotenuse (H) = Opposite side (O) / sin(θ) for angle θ.