if A+B+C=180 , PROVE THAT : cos.cos A + cos.cos B + cos.cos C = 1-2cosAcosBcosC
Asked by Aashna Anith Kumar | 1st Jul, 2013, 08:43: PM
Expert Answer:
Answered by | 1st Jul, 2013, 10:01: PM
Related Videos
Kindly Sign up for a personalised experience
- Ask Study Doubts
- Sample Papers
- Past Year Papers
- Textbook Solutions
Sign Up
Verify mobile number
Enter the OTP sent to your number
Change