Trig ratios

Front

What is the mnemonic to remember trigonometric ratios?

Back

Soh Cah Toa

Front

What does 'Soh' stand for in trigonometric ratios?

Back

Sine = Opposite / Hypotenuse

Front

What does 'Cah' stand for in trigonometric ratios?

Back

Cosine = Adjacent / Hypotenuse

Front

What does 'Toa' stand for in trigonometric ratios?

Back

Tangent = Opposite / Adjacent

Front

If the opposite side is 18 cm and the hypotenuse is 30 cm, what is the sine of the angle?

Back

0.6

Front

If the adjacent side is 24 cm and the hypotenuse is 30 cm, what is the cosine of the angle?

Back

0.8

Front

If the opposite side is 18 cm and the adjacent side is 24 cm, what is the tangent of the angle?

Back

0.75

Front

How do you find the length of a side in a right triangle using trigonometric ratios?

Back

Use the appropriate ratio (Sine, Cosine, or Tangent) based on the known sides.

Front

What is the height of a tree if the distance from the observer is 50 ft and the angle of elevation is 30 degrees?

Back

Height = 50 * tan(30) = 28.87 ft

Front

What is the formula for finding the angle using trigonometric ratios?

Back

Angle = sin^(-1)(Opposite/Hypotenuse) or cos^(-1)(Adjacent/Hypotenuse) or tan^(-1)(Opposite/Adjacent)