If = 30° verify the Cos 30θ = 4 cos^3θ – 3 cos θ

0 votes
21 views
asked Feb 15, 2018 in Mathematics by sforrest072 (157,439 points) 61 410 947

If = 30° verify the 

Cos 30θ = 4 cos3θ – 3 cos θ

1 Answer

0 votes
answered Feb 15, 2018 by mdsamim (213,225 points) 5 10 15
selected Feb 15, 2018 by sforrest072
 
Best answer

The correct answer is

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

One Thought Forever

“There is a close connection between getting up in the world and getting up in the morning.“
– Anon
~~~*****~~~

...