Question 4 - sin 90 - θ, cos 90 - θ formula - Chapter 8 Class 10 Introduction to Trignometry

Last updated at May 29, 2023 by

Ex 8.3, 4 - If tan A = cot B, prove that A + B = 90 - Trignometric ratios of complementry angles

Learn in your speed, with individual attention - Teachoo Maths 1-on-1 Class

Book a free demo

Transcript

Question 4 If tan A = cot B, prove that A + B = 90 . Given tan A = cot B To solve this we should know relation between tan and cot Now, We know that cot θ = tan (90 - θ) Putting value of cot B tan A = tan (90 - B) Comparing angles A = 90 - B A + B = 90 Hence proved.

Ask a doubt
Davneet Singh's photo - Co-founder, Teachoo

Made by

Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.