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# trigonometry

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how to find sine angle if the givens are opposite and adjacent sides?

i find this very confusing, i already did the sine formulas and the rest but still can't get it right

Guest Feb 22, 2017
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#1
+10657
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sin = opposite / hypotenuse   = 172/hypotenuse

use pythagorean theorem to calculate the hypotenuse THEN use that result to calculate the sin

HYPOTENUSE = N = sqrt( 32^2 + 172^2)     .....    need more help??

ElectricPavlov  Feb 22, 2017
#2
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@ElectricPavlov i did the exact thing you said, the hypotenuse was 174.95 (i rounded it off) so to get the sin angle i did

opposite/174.95 = 0.98, then in sin degree form it showed 78.52 but still wrong. did i put something wrong or calculate it wrong??

i'm so confused

Guest Feb 22, 2017
#3
+5567
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sin a = 172/N

N is ≈ 174.951

so

sin a ≈ 172/174.951 ≈ 0.983

Is that not the right answer?

hectictar  Feb 22, 2017
#4
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okay i get it now. my mistake was i kept converting the value of sin itself to degrees cause i thought it was looking for the angle part

but turns out it was just the unconverted part. Thank you guys!

Guest Feb 22, 2017
#5
+5567
+1

hectictar  Feb 22, 2017

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