Trigonometric EquationHard
Question
If the lines 
and 
intersect each other, then (λ + λ) is equal to -
and intersect each other, then (λ + λ) is equal to -Options
A.2
B.-1
C.0
D.1
Solution
If lines 
& 
intersects each other, then
2 + λ = 1, 1 - 2λ = 1 + μ & 1 = - 3 + 2μ
⇒ λ = - 1, μ = 2
& intersects each other, then
2 + λ = 1, 1 - 2λ = 1 + μ & 1 = - 3 + 2μ
⇒ λ = - 1, μ = 2
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