Question

3
4
5
The acute angle between two lines 2+4 = 4-7 - 245
and 3-4k + t Calth + i) is
a) 30° b) 60
c) 45°
) 90°​

Answer 1

Answer:

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Step-by-step explanation:

Direction ratio of line 2x=3y=−z is  (21,31,−1) and 

Direction ratio of line 6x=−y=−4z is  (61,−1,−41).

Dot product of the direction ratio of the two line =21×61+31×(−1)+(−1)×(−41)

=121−31+41

=0

So, angle between the lines is 90∘.