1. Chapter 8 Class 10 Introduction to Trignometry
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  3. Sin 90 - θ, cos 90 - θ formula
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Question 3 - sin 90 - θ, cos 90 - θ formula - Chapter 8 Class 10 Introduction to Trignometry

Last updated at Dec. 13, 2024 by Teachoo

Transcript

Question 3 If tan 2A = cot (A – 18°), where 2A is an acute angle, find the value of A. tan 2A = cot (A – 18°) cot (90 – 2A) = cot (A – 18°) Comparing angles 90 – 2A = A – 18 90 + 18 = A + 2 A 108 = 3 A 108/3= A 36 = A A = 36°
  1. Chapter 8 Class 10 Introduction to Trignometry
  2. Serial order wise

    3. Sin 90 - θ, cos 90 - θ formula

    Finding sin cos tan →
Finding sin cos tan →
Chapter 8 Class 10 Introduction to Trignometry
Serial order wise

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Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science and Computer Science at Teachoo