Trigonometry
Inverse Trigonometric Functions
MCQ (Single Correct Answer)Subjective
1
WB JEE 2017
MCQ (Single Correct Answer)
+1
-0.25
Three lines are drawn from the origin O with direction cosines proportional to (1, $$-$$1, 1), (2, $$-$$3, 0) and (1, 0, 3). The three lines are
A
not coplanar
B
coplanar
C
perpendicular to each other
D
coincident
2
WB JEE 2016
MCQ (Single Correct Answer)
+1
-0.25
The cosine of the angle between any two diagonals of a cube is
A
$${1 \over 3}$$
B
$${1 \over 2}$$
C
$${2 \over 3}$$
D
$${1 \over {\sqrt 3 }}$$
WB JEE Subjects