menu
QAmmunity.org
Login
Register
My account
Edit my Profile
Private messages
My favorites
Ask a Question
Questions
Unanswered
Tags
Categories
Ask a Question
Use co-function and expansion of cos[(90-a)- B] to show that: sin(a+b) = sinacosb +sinbcosa
asked
Jan 22, 2023
168k
views
22
votes
Use co-function and expansion of cos[(90-a)- B] to show that: sin(a+b) = sinacosb +sinbcosa
Mathematics
college
Tamas
asked
by
Tamas
8.5k
points
answer
comment
share this
share
0 Comments
Please
log in
or
register
to add a comment.
Please
log in
or
register
to answer this question.
1
Answer
3
votes
Explanation:
Jidi
answered
Jan 28, 2023
by
Jidi
8.9k
points
ask related question
comment
share this
0 Comments
Please
log in
or
register
to add a comment.
← Prev Question
Next Question →
Related questions
asked
Apr 17, 2017
226k
views
Sin(a-b) = sinacosb+cosasinb for all values of a and b. True or false?
Deyon
asked
Apr 17, 2017
by
Deyon
9.3k
points
Mathematics
high-school
2
answers
4
votes
226k
views
asked
Jan 28, 2019
97.2k
views
Sin(a+b)/sin(a-b)=tana+tanb/tana-tanb a= alpha b = beta I can get to this from the left side, sinacosb+cosasinb/sinacosb-cosasinb, not sure how to prove it from there.
Desaray
asked
Jan 28, 2019
by
Desaray
8.0k
points
Mathematics
college
2
answers
2
votes
97.2k
views
asked
Jul 12, 2020
25.5k
views
Derive these identities using the addition or subtraction formulas for sine or cosine: sinacosb=(sin(a+b)+sin(a-b))/2
Aleksandr Vishnyakov
asked
Jul 12, 2020
by
Aleksandr Vishnyakov
8.5k
points
Mathematics
middle-school
1
answer
0
votes
25.5k
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)
Twitter
WhatsApp
Facebook
Reddit
LinkedIn
Email
Link Copied!
Copy
Search QAmmunity.org