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Asked Sep 27, 2019
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O TRIGONOMETRIC FUNCTIONS
Ma
Evaluating expressions involving sine and cosine
E
7Tt
If
find the exact value of each expression below.
6
sin20 II
(a)
2 sin0 |
(b)
(c) sin -0) I
=
_
X
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O TRIGONOMETRIC FUNCTIONS Ma Evaluating expressions involving sine and cosine E 7Tt If find the exact value of each expression below. 6 sin20 II (a) 2 sin0 | (b) (c) sin -0) I = _ X

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Expert Answer

Step 1

a)Find the value of sin2 θ

1 - cos 2
sin
6
2
1-cos
3
2
1 - cos 27T
3
2
п
1-cos
3
cos(27+xcos.x
2
1
2
2
1
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1 - cos 2 sin 6 2 1-cos 3 2 1 - cos 27T 3 2 п 1-cos 3 cos(27+xcos.x 2 1 2 2 1

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Step 2

b)Find the value of...

77T
2sin
2 sin n +
6
( sin(xin x)
=-2 sin
6
1
-2
2
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77T 2sin 2 sin n + 6 ( sin(xin x) =-2 sin 6 1 -2 2

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