How do you simplify #sin(90 + x)#?

1 Answer
Write your answer here...
Start with a one sentence answer
Then teach the underlying concepts
Don't copy without citing sources
preview
?

Answer

Write a one sentence answer...

Answer:

Explanation

Explain in detail...

Explanation:

I want someone to double check my answer

Describe your changes (optional) 200

18
dani83 Share
Aug 14, 2015

Answer:

# sin (90 + x) = cos x #

Explanation:

# sin (90 + x) = cos x #

Method 1: Using plots of #sin x# and #cos x#. A shift of -90 degrees of #sin x# gives you #cos x#

Method 2: #sin (A +- B) = sin A cos B +- cos A sin B #

Was this helpful? Let the contributor know!
1500
Trending questions
Impact of this question
7479 views around the world
You can reuse this answer
Creative Commons License