Math, asked by bhavyasarawgi5474, 1 year ago

Prove that cos 520 + cos 680 + cos 1720 = 0

Answers

Answered by ravisanplapcjwiv

1

Use C formula for solving this

Attachments:

Previous Question

Next Question

Similar questions

Chemistry, 7 months ago

observe the two test tubes A and B in the diagram given below and answer the following questions. a.) In which test tube the reaction take place b.) Write the balanced equation for the reaction. c.) Name the type of reaction.

English, 7 months ago

sentence with break away...

Math, 7 months ago

find the LCM of 8 , 9 by writing the multiple...

Science, 1 year ago

why aluminium corrosion considered to be advantageous??????? plz help me out...

Science, 1 year ago

give reason 1. aluminium easily combines with oxygen but still it can be used for making kitchen utensils. 2. sodium , pottassium and calcium metals form hydrates by combination with hydrogen gas but most other metals donot. 3. dry fruit plastic bags sold in the market are filled with nitrogen gas instead of air. 4. gold and silver often occur in their native state 5. blue colour...

Chemistry, 1 year ago

Describe the effect of heat on a solid liquid and gas in terms of expansion?

Chemistry, 1 year ago

Which element is the most reactive? sodium nickel carbon oxygen...

Biology, 1 year ago

Answer this fast plz whoever answer this may god give them lotzz of happiness from my side...