Math, asked by Snehalgarje123, 1 year ago

Prove that sin(-330°)cos(-300°)+Sin(-420°)•Cos(390°)=1/2

Answers

Answered by ukp

5

sin(-360+30)cos(360-60)+sin(-360-60)cos(360+30)
=1/4+1/4
=1/2

Previous Question

Next Question

Similar questions

Math, 9 months ago

V В B Two adjacent angles of parallelogram are (8x + 115) and (2x + 45)'. Find the measure the angles of the parallelogram. D BY Buy Books Online A T. LTD. TRS - I MAJESTIC MATHEMATICS - VIII Corporate Office 4583/15, Daryaganj New Delhi - 110 002 PO Box 7226 Phone 011 - 4358 5858, 23. Fax 011 - 2324 3519, 4311 Import Export License No. 050100 Find us on mail your valuable suggestions to...

Social Sciences, 9 months ago

Nebrouring country of India...

English, 9 months ago

Why does the poet repeat the word never in the poem television?

English, 1 year ago

Explain the ways delete a file...

English, 1 year ago

Explain the ways delete a file...

Environmental Sciences, 1 year ago

how to causes air pollution?

Environmental Sciences, 1 year ago

how to solve global warming?

Environmental Sciences, 1 year ago

how air pollution is caused?