Basic Trig Ratios

Front

What are the basic trigonometric ratios?

Back

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

Front

What is the formula for Sine (sin) of an angle?

Back

sin(A) = Opposite / Hypotenuse

Front

What is the formula for Cosine (cos) of an angle?

Back

cos(A) = Adjacent / Hypotenuse

Front

What is the formula for Tangent (tan) of an angle?

Back

tan(A) = Opposite / Adjacent

Front

In a right triangle, which side is opposite to angle A?

Back

The side that does not touch angle A.

Front

In a right triangle, which side is adjacent to angle A?

Back

The side that touches angle A but is not the hypotenuse.

Front

What is the hypotenuse in a right triangle?

Back

The longest side opposite the right angle.

Front

If the opposite side is 6 and the hypotenuse is 10, what is sin(A)?

Back

sin(A) = 6/10 = 0.6

Front

If the adjacent side is 8 and the hypotenuse is 10, what is cos(A)?

Back

cos(A) = 8/10 = 0.8

Front

If the opposite side is 6 and the adjacent side is 8, what is tan(A)?

Back

tan(A) = 6/8 = 0.75