menu
Qammunity.org
Login
Register
My account
Edit my Profile
Private messages
My favorites
Verify the identity of sin (x+pi/2)=cos x
Ask a Question
Questions
Unanswered
Tags
Ask a Question
Verify the identity of sin (x+pi/2)=cos x
asked
Aug 10, 2017
78.0k
views
2
votes
Verify the identity of
sin (x+pi/2)=cos x
Mathematics
high-school
Next Door Engineer
asked
by
Next Door Engineer
7.9k
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
Sin(A+B) = sinAcosB + sinBcosA
sin (x + pi/2) = sin x cos pi/2 + sin pi/2 cos x
= sin x (0) + 1 (cos x)
= cos x
(cos pi/2 = 0 and sin pi/2 = 1)
Chris McKinnel
answered
Aug 14, 2017
by
Chris McKinnel
8.6k
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
How do you estimate of 4 5/8 X 1/3
Twitter
WhatsApp
Facebook
Reddit
LinkedIn
Email
Link Copied!
Copy
Search Qammunity.org