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Which of the following equations has no ...

Which of the following equations has no solution?

A

`sectheta=23`

B

`costheta=sqrt(2)`

C

`tantheta=(1)/(7)`

D

`sintheta=-(1)/(5)`

Text Solution

Verified by Experts

The correct Answer is:
B

We know that, rage of `costheta` is [-1,1].
therefore `costheta=sqrt(2)` is not possible.
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