If cosA + cosB + cosC = sinA + sinB + sinC = O, then the value of
cos(2A-B-C) + cos(2B-A-C)+cos(2C-A-B) is ____.
Can this question be solved with the help of the concept of complex numbers?

Question

If cosA + cosB + cosC = sinA + sinB + sinC = O, then the value of cos(2A-B-C) + cos(2B-A-C)+cos(2C-A-B) is ____. Can this question be solved with the help of the concept of complex numbers?

Sumit Majumdar · Answer

Hello student, Please specify if A, B, C are angles of a triable itself. This can be done using complex numbers provided we have some relation between A, B and C being the angles of a triangle. Thanks & Regards Sumit Majumdar, askIITians Faculty Ph.D,IIT Delhi

Thank you for registering.

Register Now and Win Upto 25% Scholorship for a Full Academic Year !

Enter Your Details

Registration done!

If cosA + cosB + cosC = sinA + sinB + sinC = O, then the value of cos(2A-B-C) + cos(2B-A-C)+cos(2C-A-B) is ____. Can this question be solved with the help of the concept of complex numbers?

If cosA + cosB + cosC = sinA + sinB + sinC = O, then the value of
cos(2A-B-C) + cos(2B-A-C)+cos(2C-A-B) is ____.
Can this question be solved with the help of the concept of complex numbers?

1 Answers

Think You Can Provide A Better Answer ?

Provide a better Answer & Earn Cool Goodies See our forum point policy

Other Related Questions on Trigonometry

ASK QUESTION

Answer and earn gift vouchers

View courses by askIITians

Design classes One-on-One in your own way with Top IITians/Medical Professionals

Complete Self Study Package designed by Industry Leading Experts

Live 1-1 coding classes to unleash the Creator in your Child

a Complete All-in-One Study package Fully Loaded inside a Tablet!

Register Now & Win Upto 25% Scholorship