https://padhaiwise.com/resources/class-10/ncert-solutions/maths-22/9-some-applications-of-trigonometry/ Recent content in NCERT Solutions Class 10 Maths Chapter 9 Some Applications of Trigonometry on Padhaiwise en © 2026 Padhaiwise. All rights reserved. https://padhaiwise.com/resources/class-10/ncert-solutions/maths-22/9-some-applications-of-trigonometry/exercise-9.1/ Mon, 01 Jan 0001 00:00:00 +0000 https://padhaiwise.com/resources/class-10/ncert-solutions/maths-22/9-some-applications-of-trigonometry/exercise-9.1/ <h1 id="ncert-solutions-for-class-10-maths-chapter-9-some-applications-of-trigonometry-exercise-91">NCERT Solutions for Class 10 Maths Chapter 9 Some Applications of Trigonometry Exercise 9.1<a class="anchor" href="#ncert-solutions-for-class-10-maths-chapter-9-some-applications-of-trigonometry-exercise-91">#</a></h1> <p>Exercise 9.1 applies trigonometry to real-life problems involving heights and distances. Students use angles of elevation and depression to find unknown heights and distances.</p> <blockquote class='book-hint info'> <p><strong>Key Concepts:</strong></p></blockquote><ul> <li><strong>Angle of Elevation:</strong> The angle formed between the horizontal line and the line of sight when looking upward at an object.</li> <li><strong>Angle of Depression:</strong> The angle formed between the horizontal line and the line of sight when looking downward at an object.</li> <li><strong>Standard values:</strong> $\tan 30° = \frac{1}{\sqrt{3}}$, $\tan 45° = 1$, $\tan 60° = \sqrt{3}$</li> </ul> <h2 id="1-a-circus-artist-is-climbing-a-20-m-long-rope-which-is-tightly-stretched-and-tied-from-the-top-of-a-vertical-pole-to-the-ground-find-the-height-of-the-pole-if-the-angle-made-by-the-rope-with-the-ground-level-is-30"><b class="normal-text"> 1. A circus artist is climbing a 20 m long rope, which is tightly stretched and tied from the top of a vertical pole to the ground. Find the height of the pole, if the angle made by the rope with the ground level is 30°. </b><a class="anchor" href="#1-a-circus-artist-is-climbing-a-20-m-long-rope-which-is-tightly-stretched-and-tied-from-the-top-of-a-vertical-pole-to-the-ground-find-the-height-of-the-pole-if-the-angle-made-by-the-rope-with-the-ground-level-is-30">#</a></h2> <details> <summary>Answer</summary><div class="markdown-inner book-answer-body"> <p>Let AB be the pole and AC = 20 m be the rope, with ∠ACB = 30°.</p>