1
MHT CET 2021 20th September Morning Shift
MCQ (Single Correct Answer)
+2
-0

The angle between a line with direction ratios 2, 2, 1 and a line joining (3, 1, 4) and (7, 2, 12) is

A
$${\cos ^{ - 1}}\left( {{1 \over {\sqrt 3 }}} \right)$$
B
$${\cos ^{ - 1}}\left( {{1 \over 3}} \right)$$
C
$${\cos ^{ - 1}}\left( {{2 \over 3}} \right)$$
D
$${\cos ^{ - 1}}\left( {{{\sqrt 2 } \over 3}} \right)$$
2
MHT CET 2021 20th September Morning Shift
MCQ (Single Correct Answer)
+2
-0

If the line $$\frac{x+1}{2}=\frac{y-m}{3}=\frac{z-4}{6}$$ lies in the plane $$3 x-14 y+6 z+49=0$$, then the value of $$m$$ is

A
3
B
$$-$$5
C
5
D
2
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