If 4sin −1 x + cos −1 x = 𝜋 then find the value of x.

This is a question of CBSE Sample Paper - Class 12 - 2017/18.

You can download the question paper here  https://www.teachoo.com/cbse/sample-papers/


Slide9.JPG

Slide10.JPG

  1. Class 12
  2. Sample Papers, Previous Year Papers and Other Questions
Ask Download

Transcript

Question 5 If 4sin 1 x + cos 1 x = then find the value of x. 4sin 1 x + cos 1 x = We know that sin 1 x + cos 1 x = /2 cos 1 x = /2 "sin 1 x" 4sin 1 x + / "sin 1 x" = 4sin 1 x "sin 1 x" = /2 3sin 1 x = /2 sin 1 x = 1/3 /2 sin 1 x = /6 sin 1 x = /6 x = sin /6 x = sin (180 )/6 x = sin 30 x = /

About the Author

Davneet Singh's photo - Teacher, Computer Engineer, Marketer
Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 8 years. He provides courses for Maths and Science at Teachoo. You can check his NCERT Solutions from Class 6 to 12.