Question

Find the value of k if points (k, 3), (6, -2) and (-3, 4) are collinear

Answer 1

Step-by-step explanation:

∠i=∠r

or, ∠i=90

∘

−30

∘

=60

∘

⇒∠i=∠r=60

∘

Now,

∠α=90

∘

−60

∘

=30

∘

Again,

∠α=∠x (Law of reflection)

⇒∠x=∠α=30

∘

Hence, A is the correct option.