Let if then one of the possible value of is:

A

`23/10ifpi/2ltAltpi`

B

`23/10if(3pi)/2ltAlt2pi`

C

`(-53)/10ifpi/2ltAltpi`

D

`-53/10if(3pi)/2ltAlt2pi`

Text Solution

Verified by Experts

The correct Answer is:
A, D

We have `tanA=-3/4`
If A lies in `2^(nd)` quadrant, then
`sinA=4/5,cosA=(-3)/5,and cotA=(-3)/4`
If lies `2^(nd)` quadrant, then
`sinA=(-4)/5,cosA=(3)/5,and cotA=(-3)/4`
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