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Prove that the lines 3x + 2y + z – 5 = 0...

Prove that the lines 3x + 2y + z – 5 = 0 = x + y – 2z – 3 and 2x – y – z = 0 = 7x + 10y – 8z – 15 are perpendicular

A

`0^(@)`

B

`30^(@)`

C

`60^(@)`

D

`90^(@)`

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Verified by Experts

The correct Answer is:
D
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