Math, asked by sanjusaro2006, 1 month ago

please answer this. question

Attachments:

Answers

Answered by karnatiaruna6

1

cos2A + cos2 (A+120°) + cos2(A-120°) = 3 /2.

proof:-

see image

Attachments:

Previous Question

Next Question

Similar questions

Math, 19 days ago

(-3)*(-3)*(-3)*6 times...

History, 19 days ago

Q)Which among the following was famous in chintzes. a) Dhaka. b) mafulipatlan. c) Calicut. d) Burhanpur...

English, 19 days ago

let us take Bangladeshi food make it an assertive sentence...

Science, 1 month ago

Pure blood is taken to various part of body by: A. veins B.vena cava C. Right ventricle D.aorta ...

Math, 1 month ago

factorisation:- 1-a-b+ab...

Hindi, 9 months ago

निम्नलिखित शब्दों से उपसर्ग/प्रत्यय अलग कीजिए और मूल शब्द बताइए (Separate pr suffix and write root words.) उपसर्ग मूलशब्द प्रत्यय निराहारी सांप्रदायिक अप्रसन्नता अपनापन किनारीदार परिस्थिति...

Social Sciences, 9 months ago

Gandhi decided to launch nation wide satyagraha in 1919 why ...

English, 9 months ago

many of these girls ___ (had/have) failed...