The Basics of Trig

What is the ratio for Tangent

• Opp/Adj

• Adj/Opp

• Opp/Hyp

• Hyp/Opp

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sin A = ?

• 7/25
• 24/25
• 7/24
• 25/7

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m∠A = ?

• 16.3⁰
• 73.8⁰
• 15.6⁰
• 17.0⁰

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Which trig function do you use?

• Sine
• Cosine
• Tangent

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• 27/36
• 27/45
• 45/36
• 45/27

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• 18/30
• 24/30
• 18/24
• 24/18

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What is the correct ratio?

• sin 40 = w/28
• cos 40 = w/28
• tan 40 = w/28
• sin 40 = 28/w

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Set up the problem...

• sin X = 41/28
• tan X = 41/28
• cos X = 28/41
• sin X = 28/41

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Choose the correct ratio.

• sin(37)=x/14
• cos(37)=x/14
• tan(37)=x/14
• sin(37)=14/x

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If you are given 2 of the sides to an obtuse triangle, which trig function should you use to find the other side?

• sine
• cosine
• tangent
• You can only use trig functions on right triangles.

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