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In radians , sin^(-1) (cos 100^(@)) =...

In radians , `sin^(-1) (cos 100^(@))` =

A

`-1.4`

B

`-0.2`

C

`0.2`

D

`1.0`

Text Solution

Verified by Experts

The correct Answer is:
B
With your calculator in degree mode , evaluate `sin^(-1) (cos (100)) = -10^@` directly . To change to radians , return your calculator to radian mode and key in `-10^@` and multiply by `(pi)/(180^@)` . This will return `-0.17 ~~ -0.2` radians .
An alternative solution is to convert `-10^@` to radians by multiplying to `(pi)/(180^(@))`
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