Check sibling questions

Example 9 - Evaluate tan 65 / cot 25 - Chapter 8 Class 10 - Examples

This video is only available for Teachoo black users

Maths Crash Course - Live lectures + all videos + Real time Doubt solving!


Transcript

Example 9 Evaluate tan 65° /cot 25° . Now, tan 65 / cot 25 We know that 25 + 65 = 90 Hence, 65 = 90 - 25 So, we put tan 65 as tan (90 - 25) = ( tan (90 - 25))/cot 25 Now, we know that tan (90 - θ) = cot θ = cot 25 /cot 25 = 1

Ask a doubt (live)
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 12 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.