# CBSE Class 10-Mathematics: Chapter – 8 Introduction to Trigonometry Part 3 (For CBSE, ICSE, IAS, NET, NRA 2022)

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**Question 12**:

**Answer**:

**Question 13**:

If what is the value of .

**Answer**:

**Question 14**:

What is the value of in terms of

**Answer**:

**Question 15**:

If find

**Answer**:

## 2 Mark Questions

**Question 1**:

In , right angled at , . Determine:

(i)

(ii)

**Answer**:

Let us draw a right-angled triangle ABC, right angled at B.

Using Pythagoras theorem,

(i)

(ii)