Trig Ratios with Calculator Intro

Front

What is the tangent ratio in a right triangle?

Back

The tangent ratio is defined as the ratio of the length of the opposite side to the length of the adjacent side. It is expressed as: tan(θ) = opposite/adjacent.

Tags

CCSS.HSG.SRT.C.6

Front

How do you calculate tan 65° using a calculator?

Back

To calculate tan 65°, enter '65' and then press the 'tan' button on your calculator. The result is approximately 2.14.

Front

What is the mnemonic for remembering trigonometric ratios?

Back

The mnemonic is 'Soh Cah Toa', which stands for: Soh = Sine = Opposite/Hypotenuse, Cah = Cosine = Adjacent/Hypotenuse, Toa = Tangent = Opposite/Adjacent.

Tags

CCSS.HSG.SRT.C.6

Front

What is the cosine ratio in a right triangle?

Back

The cosine ratio is defined as the ratio of the length of the adjacent side to the length of the hypotenuse. It is expressed as: cos(θ) = adjacent/hypotenuse.

Tags

CCSS.HSG.SRT.C.6

Front

How do you calculate cos 30° using a calculator?

Back

To calculate cos 30°, enter '30' and then press the 'cos' button on your calculator. The result is approximately 0.87.

Tags

CCSS.HSG.SRT.C.7

Front

What is the inverse cosine function?

Back

The inverse cosine function, denoted as cos⁻¹ or arccos, is used to find the angle whose cosine is a given number.

Tags

CCSS.HSF.TF.B.7

Front

How do you calculate cos⁻¹(0.8863) using a calculator?

Back

To calculate cos⁻¹(0.8863), enter '0.8863' and then press the 'cos⁻¹' or 'arccos' button on your calculator. The result is approximately 27.6°.

Tags

CCSS.HSF.TF.B.7

Front

What is the sine ratio in a right triangle?

Back

The sine ratio is defined as the ratio of the length of the opposite side to the length of the hypotenuse. It is expressed as: sin(θ) = opposite/hypotenuse.

Tags

CCSS.HSG.SRT.C.6

Front

What is the relationship between the sides of a right triangle and its angles?

Back

In a right triangle, the angles determine the ratios of the lengths of the sides. The larger the angle, the longer the opposite side relative to the adjacent side.

Tags

CCSS.HSG.CO.C.10

Front

What does 'opposite' mean in the context of trigonometric ratios?

Back

In a right triangle, the 'opposite' side is the side that is opposite to the angle being considered.

Tags

CCSS.HSG.SRT.C.6