Math, asked by anjalikunwor7, 5 days ago

tan 9° cot 27° - cot 81° tan 63

Answers

Answered by AtikRehan786

3

Answer:

tan81+tan9−(tan63+tan27)

=cot9+tan9−(cot27+tan27)

=sin9.cos9(cos9)2+(sin9)2−sin27.cos27(cos27)2+(sin27)2

=sin9.cos91−sin27.cos271

=2 sin/18−2sin/54

=2.sin54.sin18/sin54−sin18

=cos36.sin18/4cos36sin18

=4

Previous Question

Next Question

Similar questions

History, 2 days ago

pls give me answer fast it's urgent...

Economy, 2 days ago

the number of firms in perfect compititive market is?

English, 2 days ago

write a dilogue format between a faculty and a student discussing that how to improve our communication skills...

Math, 5 days ago

Q:50)What time will be taken by an amount of Rs. 900 to yield Rs. 81 as interest at D:))5% per annum of simple interest? Sol: A:) 2 years B:) 1 years C:) 3 years D:) 4 years Correct : A...

Math, 5 days ago

Multiply: ( 4x² +9) and ( 3x - 2)...

Social Sciences, 7 months ago

how industrial pollution can be checked ...

English, 7 months ago

In the following question, some part of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate option. If a sentence is free from error, select 'No Error'. Each boy was given ( A) /a toy as a parting gift,(B)/which made them happy.(C)/No error(D)...

English, 7 months ago

Why did God withhold the gift of rest from man? * 1 point if we humans get everything we need, then we will become rich. if we humans get everything we need, then we will forget hunamity. if we humans get everything we need, then we will want more. if we humans get everything we need, then we will forget God ...