Normal type of MCQ with one correct option
cot(1 21 + cot(1 13 + cot-1 ((8) is equal to
0
cot(1 26
(
none of these
Normal type of MCQ with one correct option
sin (cot-1x) is equal to
none of these
none of these
Normal type of MCQ with one correct option cot (cos(1x) is equal to
none of these
A,B
B
C,D
A,B & D
null set
Comprehension
In reducing a given equation to the standard forms (sinx=sin( etc) we apply trigonometric or algebraic transformations. As a result of which the canonical form finally obtained may not be equivalent to the original equation resulting either in loss of solution or in the appearance of fake solutions.
The equation 2 cot 2x-3 cot 3x = tan2x has
two solutions in (0, (/3)
one solutions in (0, (/3)
no solution in (-(, ()
none of these
Comprehension
In reducing a given equation to the standard forms (sinx=sin( etc) we apply trigonometric or algebraic transformations. As a result of which the canonical form finally obtained may not be equivalent to the original equation resulting either in loss of solution or in the appearance of fake solutions.
The solution to the equation |cosx| = cosx -2 sinx is
None of these.
Both A and R are true and R is correct explanation of A
Both A and R are true and R is not correct explanation of A
A is true, R is false
A is false, R is true