Question
Asked Nov 20, 2019
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For the angles
a and B in the figures, find cos(a
В).
3
2
1
В
2
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For the angles a and B in the figures, find cos(a В). 3 2 1 В 2

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Expert Answer

Step 1

Consider the given figures,

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2 1 B 2 Figure 2 Figure 1

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Step 2

Form figure 1,

Adjacent =2

Opposite=1

Then by using Pythagoras\' theorem,

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hypotenuse2 opposite +adjacent hypotenuse opposite +adjacent = V +2 = 5

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Step 3

Therefore...

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adjacent cos a hуpotenuse and opposite hурotenuse 5 sin a

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Calculus

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