Trigonometry

What is the acronym to remember the trigonometric ratios?

• sin-cos-tan

• a²+b²=c²

• SOHCAHTOA

• sine-cosine-tangent

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CCSS.HSG.SRT.C.6

We can use SOH-CAH-TOA for...

• Any triangle ever
• Non-right triangles only
• Right Triangles only
• Never

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CCSS.HSG.SRT.C.7

The ratio in a right triangle you would use if you are given adjacent and hypotenuse is _____

• sine

• cosine

• tangent

• inverse cosine

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CCSS.HSG.SRT.C.6

sin (55) =

• 0.643

• 0.766

• 1.428

• 0.819

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CCSS.HSG.SRT.C.7

Tan (30) =

• 0.577

• 88.09

• 0.5

• 0.866

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CCSS.HSG.SRT.C.7

Which side is the hypotenuse?

• w

• 28cm

• 40 degrees

• no length

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CCSS.HSG.CO.C.10

Which side is opposite?

• w

• 28cm

• 40 degrees

• no length

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CCSS.HSG.SRT.C.6

Which side is adjacent?

• 23

• x

• no length

• 63 degrees

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CCSS.HSG.SRT.C.6

What sides of the triangle have you been given?

• Opposite and Hypotenuse.

• Adjacent and Hypotenuse

• Opposite and Adjacent

• 40 degrees and 28cm

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CCSS.HSG.SRT.C.6

What would you put in your calculator to solve this?

• Sin(40) x 28 = w

• Cos (40) x 28 = w

• Tan (40) x 28 = w

• w= Sin^-1 (28/40)

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