Math, asked by kakaarora27496, 4 months ago

Prove that:

cos7x + cos5x / sin7x + sin5x

Answers

Answered by kavithks

0

Answer:

LHS=

sin7x−sin5x

cos7x+cos5x

=

2sin(

2

7x−5x

)cos(

2

7x+5x

)

2cos(

2

7x+5x

)cos(

2

7x−5x

)

=

sinxcos6x

cos6xcosx

=

sinx

cosx

=cotx=RHS

Step-by-step explanation:

radhe radhe

Previous Question

Next Question

Similar questions

Math, 2 months ago

the increase in sale of sweets during diwali is associated with whuch variation ...

Physics, 2 months ago

Positive thinking always help us to keep ourselves fit a. Mentally b. Financially c. Physically d. None...

History, 2 months ago

what wre the major development that took place due to changes in climate conditions...

Chemistry, 4 months ago

Give IUPAC names of the following: CH3 | CH3-C-CH2-CH-CH3 |. | CH3. CH2CH3...

Math, 4 months ago

is х SSO 100 100 too B as percen x host 7 A H 너 B)...

Chemistry, 10 months ago

An alkali which completely dissociates into ions is _______...

Chemistry, 10 months ago

Which of the following aminoacid is basic in nature?

Math, 10 months ago

31. Represent the linear equation in two variables x – 3y = 2 graphically.