Math, asked by 1234gs, 4 months ago

cos7x+cos5x/sin7x+sin5x=cotx

Answers

Answered by kavithks

2

Answer:

Here, we will use the following formulas:

sinA−sinB=2sin(A−B2)cos(A+B2)

cosA+cosB=2cos(A−B2)cos(A+B2)

L.H.S.=cos7x+cos5xsin7x−sin5x

=2cos(7x+5x2)cos(7x−5x2)2cos(7x+5x2)sin(7x−5x2)

=cos(x)sin(x)=cotx=R.H.S.

Step-by-step explanation:

radhe radhe

Previous Question

Next Question

Similar questions

Math, 2 months ago

Moogli enters Louis's den to steal a bunch of bananas for himself and his friends. But there are three monkeys that guard the den at different checkpoints. Corrupt as they are, each accepts a bribe from Moogli. At each checkpoint, Moogli gives them half the bananas he has and then adds 2 more on top of the pile. By the end of this ordeal, the last monkey guard gets one banana. How many bananas...

English, 2 months ago

write the adjective of the following 1) success. 2) Nature...

Science, 2 months ago

Light intensity used to be measured according to this. Starting with the letter C.

World Languages, 4 months ago

what is chlorophyll? don't report:(...

Math, 4 months ago

The difference in measures of complementary angles is 120 , Find the measures of angles...

English, 9 months ago

what is meaning of boy name meet...?

Social Sciences, 9 months ago

highlight any three measure adopted by the Belgium government accomodate regional and cultural diversities.

Math, 9 months ago

Find (x + 1)^6 + (x - 1)^6. Hence or otherwise evaluate (√2+ 1)^6 +(√2- 1)^6.