am i mixing things up with sin and arcsin | Mathematics | Page 1

gloomy terrace Mar 31, 2026, 4:04 AM

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thorn domeBOT Mar 31, 2026, 4:04 AM

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lost locust Mar 31, 2026, 4:07 AM

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arcsine is the inverse of sine

gloomy terrace Mar 31, 2026, 4:07 AM

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yea

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i know that

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is the sin here secretly a arc sin

lost locust Mar 31, 2026, 4:09 AM

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gloomy terrace Mar 31, 2026, 4:09 AM

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wym

lost locust Mar 31, 2026, 4:10 AM

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To find x u need to undo the sine aka use arcsine

gloomy terrace Mar 31, 2026, 4:10 AM

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wait i cant do 2sinx=-sqrt(3)

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then sinx=-sqrt(3)/2

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oh wait

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ur right

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tnak you

lost locust Mar 31, 2026, 4:18 AM

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Your welcome

gloomy terrace Mar 31, 2026, 4:52 AM

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@lost locust i need help again

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why dont i do arc cos for this one

lost locust Mar 31, 2026, 4:53 AM

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U do but understand the domains

gloomy terrace Mar 31, 2026, 4:54 AM

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yea isnt arcsin arc tan in qua 1 4

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and arc cos in qua 1 2

lost locust Mar 31, 2026, 4:54 AM

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It reachs .5 at two different spots

gloomy terrace Mar 31, 2026, 4:54 AM

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tahts waht teacher said

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lost locust Mar 31, 2026, 4:55 AM

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Yeah but thats because they don’t want the graph to have 2 outputs for 1 input

gloomy terrace Mar 31, 2026, 4:55 AM

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wait

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wghy did i click the wrong one.

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wait nvm

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i didnt

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i think

lost locust Mar 31, 2026, 4:56 AM

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Like graph the cos function it reaches .5 in 2 spots bfeore 2pi

gloomy terrace Mar 31, 2026, 4:56 AM

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yea i know that

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but for cosx=1/2

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dont i gotta make it arccos

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like x is arccos(1/2)

lost locust Mar 31, 2026, 4:56 AM

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Yeah

gloomy terrace Mar 31, 2026, 4:57 AM

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and arc cos is in quadrants 1 and 2

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which means theres only one

lost locust Mar 31, 2026, 4:57 AM

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lost locust Yeah but thats because they don’t want the graph to have 2 outputs for 1 input

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It will make more sense if u look at the cos graph

gloomy terrace Mar 31, 2026, 4:58 AM

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theres two poitns yea

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but on arc cos theres only one

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tahts waht im confused abt

lost locust Mar 31, 2026, 5:00 AM

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Graph x=cosy

gloomy terrace Mar 31, 2026, 5:01 AM

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lost locust Mar 31, 2026, 5:01 AM

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Do u understand now

gloomy terrace Mar 31, 2026, 5:02 AM

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its still only at pi/3 thoguh

lost locust Mar 31, 2026, 5:03 AM

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Its because the function cannot be a function of x if it has 2 outputs

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But it actually has 2 solutions to 2pi

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Does that make sense?

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Its like how sqrt(4)=2 and -2 but ur calculator will only give one result

chrome summit Mar 31, 2026, 6:17 AM

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Am I slow or are ya all just making your life harder?

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Lol why are you diving into that arcsin or arctan stuff

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It literally asks what to put instead of x in sinx=-(sqrt(3))/2

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X is -(pi)/3. easy! All you need is to remember where x must fall for sinx and cosx

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Why would you even consider arcsin here

median whale Mar 31, 2026, 7:31 AM

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lost locust Its like how sqrt(4)=2 and -2 but ur calculator will only give one result

Um akshualy🤓 sqrt(4) is only 2 not -2 because sqrt only outputs positive numbers. x²=4 is x=±√4so x₁=2, x₂=-2

#am i mixing things up with sin and arcsin