Mathematics MCQS for class 12 with Answers
Sine of the angle between any two non-zero vectors a & b is:
a x b
|a| |b| /|axb
| axb
a . b
Two non-zero vectorsu&v are perpendicular if and only ifu.v=
1
2
0
-1
Magnitude of the vector xî+y? is:
?x2-y2
?x+y
x2-y2
?x2+y2
Two vectors a and b are perpendicular if
a . b = 0
a . b = 1
a – b = 0
a + b = 0
Two non-zero vectorsa & b are parallel ifa x b=
-1
0
1
–bxa
For two vectors a&b :a.b=
ab Cos
ab Tan
None of these
ab Sin
If the angle
Components
None of these
Direction cosines
Both(a)&(b)
If K& i are two unit vectors thenkx i=
-1
j
1
0
[i j k] is equal to
1
-1
0
2
For any pt. P(x,y) the position vector of P is:
x
x + y
x–y
x
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