11th Class Math MCQS
? = n? where n ? z is the solution of
sin2? = 0
sin ? = 0
cos2?
cos? = 0
The domain of y =csc-1 x is:
x ? -1 or x ? 1
-1 ? x ?1
x ? – 1
x ? 1
The value of sin-1?3/2 is
?/2
?/3
?/4
?/6
A triangle having at least one angle of greater than 90o is called
Acute triangle
Right triangle
Obtuse triangle
Equilateral triangle
Domain of y = sin-1 x is:
[-?/2,?/2]
(0,?)
(-?/2,?/2)
– ? < x < + ?
0 = (2n +1)?/2 , n ? Z is solution of:
cos = ?
tan? = 0
sin? = 0
cont? = 0
The radius of inscribed circle is called
Circum radius
Ex-radius
Inscribed radius
In radius
Solution of the equation 1 + cos? = 0 is in quadrant:
III
II
None of these
I
2tan-1 A =
tan-1(1-A2/2A)
tan-1(2a/1+A)
tan-1 (2A/1-A2)
tan-1(A/1 – A)
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