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Mathematics 15 Online
OpenStudy (anonymous):

Help

OpenStudy (kittiwitti1):

Help on?

rebeccaxhawaii (rebeccaxhawaii):

post

OpenStudy (anonymous):

ok

OpenStudy (anonymous):

OpenStudy (kittiwitti1):

arcos it? lol how far are you in trig functions?

OpenStudy (anonymous):

Find Sin (90- x) A. -2/3

OpenStudy (kittiwitti1):

... Um. Okay.

OpenStudy (anonymous):

B. -1/3 C 1/3 D 2/3

OpenStudy (kittiwitti1):

Do you want help on one question or a bunch... 'Cause not a lot of people here will stick with you through 3+ questions on one thread lol

OpenStudy (anonymous):

It's one question the answer choices are what I listed.

rebeccaxhawaii (rebeccaxhawaii):

it comes out to a long number

OpenStudy (kittiwitti1):

@adamgamer are you there?

rebeccaxhawaii (rebeccaxhawaii):

wait which one is the question

OpenStudy (kittiwitti1):

I think it's the little image link he posted

OpenStudy (anonymous):

Both images are part of one question: given that cos (x) = 1/3 find sin ( 90-x)

OpenStudy (kittiwitti1):

\[\cos x=\frac{1}{3}\rightarrow\text{ Find }\sin{(90-x)}\]This?

rebeccaxhawaii (rebeccaxhawaii):

oh ok

OpenStudy (anonymous):

yes @kittiwitti1

OpenStudy (kittiwitti1):

Alright. I think there's a formula for this... I need to look in my textbook lol

OpenStudy (kittiwitti1):

Oop, sorry. Left my trig book at home... just have my pre-calculus book on me ^-^; http://www.mathwords.com/t/trig_identities.htm

OpenStudy (kittiwitti1):

Does that help?

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