Question
Asked Sep 13, 2019
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Find the exact value of each expression.
sin 1
(a)
2
cos(-)
(b)
COS
2
tan (1)
(c)
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Find the exact value of each expression. sin 1 (a) 2 cos(-) (b) COS 2 tan (1) (c)

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Expert Answer

Step 1

 we know that Range  of sine inverse function is[-pi/2,pi/2]. sin(pi/3)=sqrt3/2 and value of sine function is negative in fourth quadrant , 

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sin 2 3

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Step 2

we know that Range  of cos inverse function is [0,pi]. cos(pi/3)=1/2 and value of cos function is negative in second quadrant , 

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2T cos = T 3 3

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Step 3

 we know that Range  of tan inverse function is(-pi/2,pi/2). tan(pi/4)...

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tan (1) 4

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