Register
Prove thatsin 5x+sin3x/cos5x+cos3x=tan4x
84.9k views
2 votes
Prove that
sin 5x+sin3x/cos5x+cos3x=tan4x

User SlothOverlord
by
7.7k points

1 Answer

5 votes
sin5x + sin3x = 2sin4x.cosx
cos5x + cos3x = 2cos4x.cosx
so
(2sin4x.cosx)/(2cos4x.cosx) =
(sin4x)/(cos4x)
= tan4x

User Roma Rush
by
8.2k points
← Prev Question Next Question →

Related questions

User Sajas
asked Oct 24, 2024 210k views
Prove that (cosx+cos3x+cos5x)/(sinx+sin3x+sin5x) = cot3x​
Sajas asked Oct 24, 2024
by Sajas
8.2k points
1 answer
1 vote
210k views
User Tedris
asked Sep 24, 2021 102k views
Convert the following sum into a product. cosx + cos3x + cos5x + cos7x
Tedris asked Sep 24, 2021
by Tedris
7.6k points
1 answer
1 vote
102k views
User Majix
asked Jul 3, 2023 153k views
Show that the function f(x)=sin3x + cos5x is periodic and it’s period.
Majix asked Jul 3, 2023
by Majix
7.4k points
1 answer
0 votes
153k views
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Other Questions

How do you can you solve this problem 37 + y = 87; y =
What is .725 as a fraction
How do you estimate of 4 5/8 X 1/3
i have a field 60m long and 110 wide going to be paved i ordered 660000000cm cubed of cement  how thick must the cement be to cover field
Write words to match the expression. 24- ( 6+3)
Link Copied!