Find the Missing Side Using Trig Functions

What equation can be used to solve for x?

• Sin(40°)= x/40 

• Sin(40º)=x/19

• Cos(40º)=x/19

• Tan(40°)=19/x

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CCSS.HSG.SRT.C.6

Solve for x. Round to the nearest tenth.

• 103.5

• 4.7

• 55.0

• 23.4

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CCSS.HSG.SRT.C.8

Find the measurement of the missing side indicated

• 4.98

• 5.98

• 3.20

• 4.18

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CCSS.HSG.SRT.C.8

Choose the correct ratio.

• cos(33)=x/14

• sin(33)=x/14

• cos(33)=14/x

• sin(33)=14/x

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CCSS.HSG.SRT.C.6

Identify the trig ratio that may be used to find the marked unknown side.

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CCSS.HSG.SRT.C.6

Which trig function would you use to solve for x?

• Sine

• Cosine

• Tangent

• Need more info

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CCSS.HSG.SRT.C.6

If you are given the two sides that are NOT the hypotenuse, which trig ratio should you use?
(a)  

• tangent

• sine

• cosine

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CCSS.HSG.SRT.C.6

Solve for x.

• 50.7

• 50.1

• 60.7

• 61.0

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CCSS.HSG.SRT.C.8

A yacht is anchored 90 feet offshore from the base of a lighthouse.  The angle of elevation from the boat to the top of the lighthouse is 26 degrees.   Which of these is nearest to the height of the lighthouse? 

• 25 feet

• 44 feet 

• 81 feet 

• 185 feet 

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CCSS.HSG.SRT.C.8

Solve for x. Round to the nearest tenth.

• 9.8

• 0.1

• 0.038

• 9.9

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CCSS.HSG.SRT.C.8