CBSE Class 10 Mathematics Standard 2026: question 24(a)

Hints

Open one hint at a time and try again before the next.

Step-by-step solution

Each step shows the marks it earns, as an examiner would award them. Checked by an independent re-solve from the question paper.

1. Squaring both sides: ${\left(\tan \theta +\frac{1}{\tan \theta }\right)}^2=2^2$

   ½ mark

2. ${\tan }^2\theta +\frac{1}{{\tan }^2\theta }+2\cdot \tan \theta \cdot \frac{1}{\tan \theta }=4\Rightarrow {\tan }^2\theta +\frac{1}{{\tan }^2\theta }+2=4$

   1 mark

3. ${\tan }^2\theta +\frac{1}{{\tan }^2\theta }=2$

   ½ mark

Answer: 2

Revise the chapter

• Chapter: Introduction to Trigonometry (notes, formulas, where marks are lost and every past question)
• Topic: Proving Simple Trigonometric Identities