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Evaluate the Following: `Cot^-1{2cos(Sin^-1 Sqrt3/2)}` - Mathematics

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Question

Evaluate the following:

`cot^-1{2cos(sin^-1  sqrt3/2)}`

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Solution

`cot^-1{2cos(sin^-1  sqrt3/2)}=cot^-1{2cos[sin^-1(sin  pi/3)]}`

`=cot^-1(2cos  pi/3)`

`=cot^-1(2xx1/2)`

`=cot^-1(1)`

`=cot^-1(tan  pi/4)`

`=pi/4`

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Chapter 4: Inverse Trigonometric Functions - Exercise 4.06 [Page 24]

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RD Sharma Mathematics [English] Class 12
Chapter 4 Inverse Trigonometric Functions
Exercise 4.06 | Q 3.2 | Page 24
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