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Mathematics 18 Online
OpenStudy (sunshinehaggard):

The hypotenuse of a right triangle measures 10 inches, and the side opposite to ∠θ, one of the non-right angles, is 5 inches long. The measure of ∠θ is

OpenStudy (sunshinehaggard):

no i dont

OpenStudy (kayders1997):

Okay so you have an opposite and hypotense side do you know what trig function that is? Sin cos or tan?

OpenStudy (sunshinehaggard):

sin

OpenStudy (kayders1997):

Good and because we don't know the angle we need to use the inverse sin so the sin with a -1 sin-1=O/H what is the opposite side and what is the hypotense side?

OpenStudy (sunshinehaggard):

sin-1(5/10)

OpenStudy (kayders1997):

Yes so you get?

OpenStudy (sunshinehaggard):

it didnt come out to any of the choices

OpenStudy (kayders1997):

Really?

OpenStudy (sunshinehaggard):

a.30 b.45 c.60 d.90

OpenStudy (sunshinehaggard):

and i got 52

OpenStudy (kayders1997):

Did you use the inverse? I got a different answer than you that is one of your options

OpenStudy (sunshinehaggard):

yes thats what im using

OpenStudy (sunshinehaggard):

what did you get?

OpenStudy (kayders1997):

30

OpenStudy (sunshinehaggard):

i got 30

OpenStudy (kayders1997):

What kind of calculator do you have?

OpenStudy (sunshinehaggard):

my cal wasnt on degree

OpenStudy (sunshinehaggard):

TI-84 plus

OpenStudy (kayders1997):

Oh okay!

OpenStudy (kayders1997):

Yeah it's hard to remember to switch to degrees and radians

OpenStudy (kayders1997):

Do this make sense? So if your finding a angle you have to use the inverse if your finding a side and you have an angle and side you need to use just regular sin cos tan

OpenStudy (sunshinehaggard):

yes makes sense now thank you

OpenStudy (kayders1997):

You're welcome :)

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