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Mathematics 12 Online
OpenStudy (anonymous):

I need help asap on a trig question!!

OpenStudy (chrisplusian):

?

Vocaloid (vocaloid):

post your question please

OpenStudy (anonymous):

find the exact values of the trig functions of the angle below. (Use the Pythagorean Theorem to find the third side)

OpenStudy (anonymous):

There is a triangle with a hypotenuse of 41 and an adjacent of 9, the opposite is missing.

Vocaloid (vocaloid):

|dw:1443394526440:dw| something like this?

Vocaloid (vocaloid):

did I get the drawing right or...?

OpenStudy (anonymous):

yes

Vocaloid (vocaloid):

ok, do you know how to find the length of the missing side?

OpenStudy (anonymous):

yeah it's where you do a^2 + b^2 = c^2 and then you square root it

Vocaloid (vocaloid):

ok, so what's the missing side?

OpenStudy (anonymous):

I got 42, but my pre calc book got 40, so I really don't know what I did wrong

Vocaloid (vocaloid):

9^2 + x^2 = 41^2

Vocaloid (vocaloid):

solve for x

OpenStudy (anonymous):

ohh, okay. I got 40 as my answer. Thank you so much

Vocaloid (vocaloid):

yup, x = 40 so now we have all three sides, now comes the easy part|dw:1443395117726:dw|

Vocaloid (vocaloid):

so, our trig functions are: sin(theta) = opposite/hypotenuse cos(theta) = adjacent/hypotenuse tan(theta) = opposite/adjacent

Vocaloid (vocaloid):

csc(theta) = hypotenuse/opposite sec(theta) = hypotenuse/adjacent cot(theta) = adjacent/opposite

Vocaloid (vocaloid):

now all you need to do is look at the triangle and plug in the numbers where they belong

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