menu
Qammunity.org
Login
Register
My account
Edit my Profile
Private messages
My favorites
Find the exact value of the expression cos10°cos20°-sin10°sin20° Please Help
Ask a Question
Questions
Unanswered
Tags
Ask a Question
Find the exact value of the expression cos10°cos20°-sin10°sin20° Please Help
asked
Dec 22, 2018
56.4k
views
5
votes
Find the exact value of the expression
cos10°cos20°-sin10°sin20°
Please Help
Mathematics
high-school
Jeconom
asked
by
Jeconom
8.7k
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
cos10 cos20 -sin10 sin20 = cos(10+20) = cos30 = √3/2
Janaco
answered
Dec 29, 2018
by
Janaco
8.5k
points
ask related question
comment
share this
0 Comments
Please
log in
or
register
to add a comment.
← Prev Question
Next Question →
No related questions found
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
Categories
All categories
Mathematics
(3.7m)
History
(955k)
English
(903k)
Biology
(716k)
Chemistry
(440k)
Physics
(405k)
Social Studies
(564k)
Advanced Placement
(27.5k)
SAT
(19.1k)
Geography
(146k)
Health
(283k)
Arts
(107k)
Business
(468k)
Computers & Tech
(195k)
French
(33.9k)
German
(4.9k)
Spanish
(174k)
Medicine
(125k)
Law
(53.4k)
Engineering
(74.2k)
Other Questions
How do you can you solve this problem 37 + y = 87; y =
What is .725 as a fraction
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
Twitter
WhatsApp
Facebook
Reddit
LinkedIn
Email
Link Copied!
Copy
Search Qammunity.org