Question
Asked Nov 21, 2019
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Simplify the expression by using a Double-Angle Formula or a Half-Angle Formula
1- cos(60°)
(a)
2
1 - cos(100)
(b)
2
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Simplify the expression by using a Double-Angle Formula or a Half-Angle Formula 1- cos(60°) (a) 2 1 - cos(100) (b) 2

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Expert Answer

Step 1

We need that half angle formula on the board.

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1-cos() sin 2 2

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Step 2

a) Theta = 60 , so theta/2 =30 degree

Using the f...

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1-cos(60) 60 =sin(30)=- 2 1 =sin 2 2

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