trigonometry

Question

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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

ElectricPavlov · Answer 1 · 2017-02-22T02:20:37

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??

Guest · Answer 2 · 2017-02-22T02:40:21

@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

hectictar · Answer 3 · 2017-02-22T03:03:32

sin a = 172/N

N is ≈ 174.951

so

sin a ≈ 172/174.951 ≈ 0.983

Is that not the right answer?

Guest · Answer 4 · 2017-02-22T03:08:23

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!