# NCERT Class 12-Mathematics: Chapter – 2 Inverse Trigonometric Function Part 12 (For CBSE, ICSE, IAS, NET, NRA 2022)

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**Question 15**:

Show that

**Answer**:

**Question 16**:

Prove that

**Answer**:

**Question 17**:

Find the value of

**Answer**:

Given that

Hence, the value of