Trigonometric Functions To Find Unknown Sides of Right Triangles, Ex 3

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  1. patrickJMT
  2. math
  3. class
  4. trigonometry
  5. right
  6. triangle
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Комментарии
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@Shift4chizzle if you only know angles, you can not deduce side length. imagine a small triangle with certain angles, and then imagine that same triangle enlarged; the angles do not change, but the side lengths clearly have.

patrickjmt
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thanks a lot Patrick....you are the best :D

bundeligafan
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hey what if u do not know any sides at all and only angles? and u want to find the height

ChazZen
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What if you need to find the angle and you have the both of the sides?

meihsingli
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Your videos are great man, really helpful! I have a question though. How would you find cos(x) if x is NOT 30, 45, or 60? I get how everything plugs in, I just can't use a calculator on tests. One of my homework problems is:


|_| /
| /
| /
| /
| / c = 8
| /
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| 33/
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| /
|/

Top left corner is 90 degrees and the bottom angle is 33 degrees with hyp of length 8. I need to find the two missing sides and the missing angle. I get 57 degrees for the missing angle. 8 * cos(33) = adjacent side, right? Also, 8 * sin(33) = opposite side. My question is what is the calculator doing in order to get the value for cos(33) and sin(33)?

anthonynavarro
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How do you know that you have to use sin?

Fafafafotina
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So basically it's the side you want the value to over the side value given??

JoshuaMckn
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What if you don't know the angle?

alyssa
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why is my calculator giving me sin(3.14/5) = 0.01096~

urgandma