If S 1 and S 2 are two straight lines such that the reflection of S 1 in S 2 and the reflection of S 2 in S…

If S1 and S2 are two straight lines such that the reflection of S1 in S2 and the reflection of S2 in S1 coincide, the angle between S1 and S2 is equal to?
  1. π3
  2. π6
  3. π4
  4. Data is insufficient.

Solution

According to the above figure, S1 and S'1 are the reflection of each other in S2.

And S2 and S'2 are the reflection of each other in S1.

So, S'1 and S'2 are coincide.

⇒3θ=π

⇒θ=π3

Asked in: AP EAMCET 2020 (23 Sep Shift 1)

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