1 and 3
1 and 2
1 and 4
2 and 3
`15^o`
`30^o`
`45^o`
None of these
`(9pi-10)/pi`
`(90pi-100)/(7pi)`
`(90pi-10)/pi`
None of these
Only 1
Only 2
1 and 2
2 and 3
`pi/2`
`pi/3`
`pi/4`
`pi`
`tan A + tan B = 0`
`tan B - tan C = 0`
`tan C + 2 tan A = 0`
`tan B + tan C = 0`
`1/2 `
`1/4 `
`1/8 `
`1/16 `
`tan^(-1) 2`
`tan^(-1) 4`
`pi/4`
`pi/3`
right-angled
equilateral
isosceles
right-angled isosceles
is equilateral
is right-angled isosceles
has angles `30^(circ), 60^(circ)` and `90^(circ) `
None of these
`15^o`
`30^o`
`45^o`
None of these
`(7-2 sqrt 3) :1`
`(7 -4 sqrt 3) :1`
`1:2`
None of these
isosceles triangle
equilateral triangle
right angled triangle
scalene triangle
`1/4`
`1/2`
`1/16`
None of these
always negative
always positive
always zero
positive, if `1 < p < 2` and negative, if `p > 2`
`pi`
`pi/3`
`pi/2`
`pi/4`
`120^o`
`90^o`
`75^o`
`60^o`
`75^o`
`60^o`
`45^o`
`30^o`
`150^o`
`135^o`
`120^o`
`105^o`
`45^0` and `75^0`
`30^0` and `90^0`
`105^0` and `15^0`
`100^0` and `20^0`
`pi/4`
`pi/3`
`pi/2`
`pi/6`
`sqrt 2` cm
`2` cm
`1` cm
`1/2` cm
`pi/2`
`pi//4`
`2pi//3`
`pi//3`
equilateral
acute angled but not equilateral
obtuse angled
right angled
right angled
isosceles
acute
equilateral
Only 1
Only 2
Both 1 and 2
Neither 1 nor 2
`30^0`
`15^0`
`45^0`
None of these
`150^o`
`135^o`
`120^o`
`105^o`
`GP`
`AP`
`HP`
Neither in `GP` nor `AP` nor in `HP`
`sqrt 5 -2`
`sqrt 5+2`
`sqrt 3-1`
`sqrt 3+1`
`GP`
`AP`
`HP`
Neither in `GP` nor `AP` nor in `HP`
the altitudes are in AP
the altitudes are in HP
the angles are in AP
the angles are in HP
HP
Arithmetico-Geometric Progression
AP
GP
`(30^0)/pi`
`(60^0)/pi`
`60^0`
None of these
`2R sin(theta/2)`
`2R sin theta`
`2R tan (theta/2)`
`2R tan theta`
equilateral
acute angled but not equilateral
obtuse angled
right angled
`15`
`13/2`
`15/2`
`6`
`170/60`
`181/60`
`190/60`
`191/60`
`((sqrt 3+1)/2) cm^2`
`2 (sqrt 3+1) cm^2`
`((sqrt 3+1)/3) cm^2`
`((sqrt 3-1)/2) cm^2`
Angles `A,B` and side a
Angles `A, B` and side b
Angles `A, B` and side c
Either (a) or (b) or (c)
`r^2`
`2r^2`
`3 r^2`
`4 r^2`