SATHEE: Straight Line Question 9

Straight Line Question 9

Question: The angle between the two lines $ y-2x=9 $ and $ x+2y=-\ 7, $ is [RPET 1981, 85, 86; MP PET 1984]

Options:

A) $ 60^{o} $

B) $ 30^{o} $

C) $ 90^{o} $

D) $ 45^{o} $

Show Answer

Answer:

Correct Answer: C

Solution:

These are perpendicular lines because $ m_1m_2=(2)( \frac{-1}{2} )=-1 $

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Straight Line Question 9

Question: The angle between the two lines $ y-2x=9 $ and $ x+2y=-\ 7, $ is [RPET 1981, 85, 86; MP PET 1984]

Options:

Answer:

Solution:

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