NCERT Class 12-Mathematics: Chapter –2 Inverse Trigonometric Function Part 13

Get top class preparation for NSTSE right from your home: fully solved questions with step-by-step explanation- practice your way to success.

Question 18:

Show that and justify why the other value is ignored?

Answer:

LHS

Using quadratic formula

Since,

But . So this value is ignored.

Question 19:

If is an arithmetic progression with common difference , then evaluate the following expression

Answer:

Given That: