समीकरण `tan^(2) theta + 3 = 3 sec theta, 0^(@) le theta lt 90^(@)` को संतुष्ट करने वाले `theta` का मान है :

Options

A. `15^(@)` or `0^(@)`
B. `30^(@)` or `0^(@)`
C. `45^(@)` or `0^(@)`
D. `60^(@)` or `0^(@)`

Answer

d

Explanation

`tan^(2)theta+3=3sectheta`
take help from option to save time put `theta=60^(@)`
`tan^(2)60^(@)+3=3 sec60^(@)`
`(sqrt(3))^(2)+3=3xx2`
`6=6` it satisfies it will also satisfies on `0^(@)` So, that is are `theta=60^(@)` or `0^(@)`