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The line (x-x1)/(a1)=(y-y1)/(b1)=(z-z1)/...

The line `(x-x_1)/(a_1)=(y-y_1)/(b_1)=(z-z_1)/(c_1)` is parallel to
the plane `ax+by+cz+d=0` if

A

(a) `(a_1)/(a)=(b_1)/(b)=(c_1)/( c)`

B

(b) `a a_1 + b b_1 + c c_1 = 1`

C

(c) `aa_1 + b b_1 + c c_1=0`

D

(d) `a_1b_1c_1=a_2b_2c_2`

Text Solution

Verified by Experts

The correct Answer is:
C
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