Question
Asked Dec 9, 2019
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use the sum identity to evaluate exactly.

Sin(π/12)

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Expert Answer

Step 1

Given:

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sin 12 we can write sin 12 as: = sin = sin = sin 24 sin 24 24 = sin 24 12 So, sin 12 sin 24 24

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Step 2

Concept used:

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sin (a +b) = sin (a)cos (b) + cos(a)sin(b)

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Step 3

Apply sum identity in...

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sin 24 24 = sin sin + cos cos 24 24 24 24 sin 24 24 = 0.1305x 0.9914+0.9914×0.1305 sin 24 24 = 0.1294 + 0.1294 = 0.2588 sin 24 24

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