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The equations of L1 and L2 are y = mx ...

The equations of `L_1 and L_2` are `y = mx and y = nx,` respectively. Suppose `L_1` make twice as large of an angle with the horizontal (measured counterclockwise from the positive x-axis) as does `L_2` and that `L_1` has 4 times the slope of `L_2.` If `L_1` is not horizontal, then the value of the product `(mn)` equals:

A

` (sqrt(2))/(2) `

B

` -(sqrt(2))/(2) `

C

2

D

-2

Text Solution

Verified by Experts

The correct Answer is:
C
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