#finding other side of right triangle

74 messages · Page 1 of 1 (latest)

amber terrace
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I accidentally solved one angle but dont really know how to solve that angle for sin and cosine

sly quailBOT
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amber terrace
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yeah i used it but is it the same for both angles?

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i got the corner b

golden spear
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Wait, I'm confused about what you're asking.

amber terrace
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but i need to find a

golden spear
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Remember SOHCAHTOA, right?

amber terrace
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so i solved for blue

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but i need to solve for red

golden spear
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Do you remember SOHCAHTOA?

amber terrace
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the trig identities?

golden spear
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What do you think I'm talking about?

amber terrace
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i mean thats the only thing i could think of lmao

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ok so its an identity thing left

golden spear
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Right, but what specifically are you thinking about?

amber terrace
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how they are reciprocals of each other

golden spear
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What are reciprocals of what?

amber terrace
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nvm nvm

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i mean ik how to get it in angles

golden spear
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What is "it"?

amber terrace
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sin A
cos A

golden spear
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That's not an "it", that's a "them".

amber terrace
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oh

golden spear
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Do you remember SOHCAHTOA or not?

amber terrace
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if you are talking about like cos = adj/hyp then yes

golden spear
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Okay. So what side is opposite A?

amber terrace
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yeah but im not solveing for cosecant

golden spear
amber terrace
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yeah sure srry

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what side is oppsite of A

golden spear
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...yes, that's the question I asked. Are you going to answer it?

amber terrace
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B

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lmfao im sorry im a little confused

golden spear
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It's a side.

amber terrace
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yes the OPPOSITE SIDE

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OH

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ok so adject and opposite are reversed

golden spear
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In the picture, what side is opposite A?

solar ibex
amber terrace
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thank you

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such a simple problem i was just scared to do it wrong

golden spear
amber terrace
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i was thinking that if we inverse sin itll automatically equal cosecant

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since cosecant is literally the reciprocal of sin

solar ibex
amber terrace
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btw guys i apologize if i actually sound stupid, im taking trig this semester without having taken geometry but having done very well in precalc

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so i thought i would do better

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i dont think im doing bad since i literally started like 3 days ago but still

solar ibex
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i think you’re doing fine

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tbh if you could solve it correctly for the blue angle i would’ve suggested you just redo the process for the red angle

amber terrace
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yeah

solar ibex
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but knowing sin(A) = cos(B) is always handy

amber terrace
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i realized (i think) that its literally just reversed since two angles must equal 180

solar ibex
amber terrace
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so if we know one is 90 we know the other is literally 90

amber terrace
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oh yeah my fault

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ur right

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but i messed up in the beginning by labeling them weird anyways

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i shouldve labeled A as B and B as A

golden spear
solar ibex
amber terrace
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so i got
SinA = 19/sqrt410
CosA = 7/sqrt410

golden spear
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sin(90 - x) = cos(x)
cos(90 - x) = sin(x)```(in degrees)
amber terrace
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which is opposite of what i got the first time which was
SinA = 7/sqrt410
CosA = 19/sqrt410

solar ibex
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you labelled A and B correctly, you just somehow solved for sin(B) and cos(B)

amber terrace
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bruh

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wtv thank you guys so much

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+close