11th Class Math MCQS
In 30 min, the hours hand of a clock turns through
?/12 rad
?/6 rad
? rad
?/24 rad
One minute is denoted by
1o
1
1
1 rad
270o and 90o both are
Quadrantal angles
Horizontal angles
Standard angles
Vertical angles
cos(-1980°) =
-1/2
?3/2
0
-1
In 3rd quadrant all trigonometric ratios are negative except
Sin0,cos0
Sin0,cosec0
cos0,sec0
Tan0,cot0
If sec0 < 0 and sin0 < 0 then the terminal arms lies in
1st quadrant
2nd quadrant
4th quadrant
3rd quadrant
If 0 = 245o then sign of sin0 is
Zero
Both (a) and (b)
Negative
Positive
The trigonometric ratios depends upon the
Length of sides
Size of angle
Perimeter of triangle
None of these
If a triangle have two angles of 45o then it is called
Isosceles triangle
Equilateral triangle
both (a) and (b)
Right triangle
Which angle is quadrantal angle?
45°
60°
270°
120°
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