`pi/4`
`pi/2`
`pi`
`(3pi)/2`
` 1/sqrt2`
` - 1/sqrt2`
`1`
None of these
`tan^(-1) x`
`tan x`
`cot x`
`cosec^(- 1)x`
`a=0, b = pi`
`a=0, b= pi/2`
`a=pi/2, b=pi`
None of these
` b/sqrt(2b^2 -a^2)`
` a/sqrt(2b^2 -a^2)`
`sqrt(2b^2 -a^2)/a`
`sqrt(2b^2 -a^2)/b`
`(0,1)`
`(1//2 , 1)`
`(1, 1//2)`
`(sqrt 3//2 ,1)`
` sqrt(ab)`
` sqrt(2ab)`
`2ab`
`ab`
4
5
3
7
1
2
3
4
`tan^(-1) x`
`tan x`
`cot x`
`cosec^(- 1)x`
` - (2 pi)/3`
` (2 pi)/3`
` pi/3`
` (5 pi)/3`
`pi`
`pi/2`
`pi/3`
`(4pi)/3`
` b/sqrt(2b^2 -a^2)`
` a/sqrt(2b^2 -a^2)`
`sqrt(2b^2 -a^2)/a`
`sqrt(2b^2 -a^2)/b`
`1/2`
`-1/2`
`1`
`-1`
`1/2`
`1/3`
`1/4`
`1`
`(0,1)`
`(1//2 , 1)`
`(1, 1//2)`
`(sqrt 3//2 ,1)`
` - pi/2`
` pi/2`
`0`
`pi`
1
2
3
4
`x=0`
`x=1/2`
`x=0` and `1/2`
None of these
`x=0`
`x=1/2`
`x=0` and `1/2`
None of these