Solving for Sides of a Right Triangle

How do you know which side is the OPPOSITE?

• It is next to the right angle

• It is opposite the right angle

• It is opposite the theta

• It is the bottom leg of the triangle

Set up the problem...

• sin X = 41/28

• tan X = 41/28

• cos X = 28/41

• sin X = 28/41

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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

From ∠C, what side is AB?

• Adjacent

• Hypotenuse

• Opposite

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CCSS.HSG.SRT.C.6

• A
• B
• C
• D

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• A
• B
• C
• D

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• A
• B
• C
• D

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What would you use to solve for a?

• sin

• cos

• tan

• Pythagorean theorem

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CCSS.HSG.SRT.C.6

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

• sine

• cosine

• tangent

• cotangent

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CCSS.HSG.SRT.C.6

Solve for x.

• 24.20

• 4.92

• 290.4

• 29.75

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CCSS.HSG.SRT.C.8