Home/ Questions/Q 1608
Next
Answered
Jay Singh
  • 4
Asked: 2020-10-30T03:33:46+00:00 In:

Given sec θ = 13/12, Calculate all other trigonometric ratios.

  • 4

NCERT Solutions for Class 10 Maths Chapter 8
Important NCERT Questions
Introduction Trigonometry
NCERT Books for Session 2022-2023
CBSE Board and UP Board Others state Board
EXERCISE 8.1
Page No:181
Questions No:5

2020-2021cbsechapter 8class10introduction trigonometrymathematicsncert
Share

    2 Answers

    1. Best Answer
      Given sec θ = 13/12, Calculate all other trigonometric ratios.

      Given that: sec 0 = 13/12
      Let sec 0 = 13k/12k, where k is a real number.
      In △ABC, by Pythagoras theorem, we have
      BC² = AC² – AB²
      = (13k)² – (12k)²
      = 169k² 144k²
      = 25k²
      ⇒ BC = √(25k²) = 5k
      Hence, sin 0 = BC/AC = 5k/13k = 5/13
      cos 0 = AB/AC = 12k/13k = 12/13
      tan 0 = BC/AB = 5k/12k = 5/12
      cose 0 = AC/BC = 13k/5k = 13/5 and cot 0 = AB/BC = 12k/5k = 12/5

      See the below video for better explanation of the above question👇😀

      • 1

    2. Get Hindi Medium and English Medium NCERT Solution for Class 10 Maths to download.
      Please follow the link to visit website for first and second term exams solutions.
      https://www.tiwariacademy.com/ncert-solutions/class-10/maths/chapter-8/

      • 2
    Leave an answer

    Leave an answer

    Browse