math fags how solve the top one pls help

>>721157223
NYPA
>when you cant do basic geometry

>>721157223
Solve triangle to left with a2= b2 + c2

2= squared

Then reverse sin cos tan every angle in that first triangle on the left.

Then because every triangle has 180 degrees you can infer the rest from finding the angle up top and reverse tan sin cos that shit again.

Not super clear but you should be able to get it.

>>721157703
I can figure it out if you bump and I'll post how to do it exactly but can you at least try?

>>721157223
Have you ever used Google you dumbfuck?
>NYPA bc you can't fucking use Google

>>721157703
There are no right triangles dumbass. Pythagorean Theorem only works on right triangles.

X= 7.1, Y=10.7

42

>>721157936
Wrong.

File: IMG_2446.jpg (1MB, 3264x2448px) Image search: [Google]

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dis wat i got so far. apparently x=16 and y=20.

>>721157991
Prove it or GTFO

>>721157223
Use Law of Cosines, maybe?

OP is an idiot
>help me
>Math 101

>>721157936
10 is hypotenuse of smaller triangle.

>>721158110
Yeah dats it

It's Cosine rule, you want to get cosA via rearranging this:

"a^2 = b^2+c^2-2(bcCosA)"

>>721158110
Don't you need the angle?

>>721157991

Because 81+64=100?

What the fuck is wrong with you? Nice try Fermat.

>>721158152
>a^2 + b^2 = c^2
>8^2 + 9^2 = 10^2
>64+81=100
>145=100

>>721157991
>>721158152
are you guys literally autistic? You have to use cosine law

How about you pay attention in class instead of staring at the girls thong in front of you..pressing that trapper keeper against your boner hoping nobody sees.

>>721158285
You have the three sides so you're isolating the angle

>>721157223
You have three sides. Just from three sides you can figure out the three angles for triangle 10-9-8

Since you have the angle of corner 8-9 you know that the adjacent corner is 180 minus corner 8-9.

From there you can calculate all the angles of triangle 8-x-y. Since you have three angles and one side, you can calculate all the sides

theta = 49.5 degrees of arc

Law of cosines. Google it yourself, and learn something.

>>721158315
Ayyy lmao. Read a book on that one time.

Ya law of cosines is your best bet.

>>721157223
You gotta find the circumference of the smaller triangle first then subtract two and then I'll give you your answer

>>721157223
Try to find the angle between 10 and 9. Find the arcosine of 9/10.

>>721157223
SOHCAHTOA MOTHERFUCKER!

You can't get Theta using trig! It's not a right-angled triangle so SOHCAHTOA is useless

>>721158628
>circumference of the smaller triangle
>circumference

I already said theta = 49.5 degrees of arc

>>721158902
Which one? How did you get your answer?

>>721158890
Took the fuckin bait, didn't ya?

x=11

>>721158874
Fuck you are retarded
https://www.mathsisfun.com/algebra/trig-solving-sss-triangles.html

>>721157223
us the law of cosines on a SSS triangle find out that the angle theta between
9 and 10 is 49.4584
and the angle between 9 and 8 is 71.79

Therefore you now know that the top angle in teh unknown triangle is theta of 49.4584, and the angle below the 8 is 180-71.79 or 108.21.

Now use ASA of the law of cosines using those three numbers. and you get 8.8888 and 7.1111

>>721158113
>>721158890
>look i can greentext

>>721159005
>I was only pretended to be stupid

Theta = theta, they're both the same

cos0 (using 0 for theta) = b^2+c^2-a^2/2bc

File: IMG_2608.jpg (21KB, 271x271px) Image search: [Google]

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I'm on fucking robitussin

>>721158874
>Use pythagorean on non-right triange
>Can't use sohcahtoa on non-right triangle

wtf is going on in this thread?

>>721158798
cos^-1 of 9/10 is about 25.84°

>>721159054
this guys right, sounds right.. didnt think of that

>>721159073
<<me too faggot

cos0 = 117/180

>>721159127
This guy

acos(117/180) = 49.5 (when considering sig. figs.

>>721159253
Fuck sig. figs! Just round to the nearest hundredth

>>721159151
You actually can't look it up.

trig is a set of specific rules to right-angled triangles... why'd you think you can never use it to get 90 degrees of arc.

>>721159409
Lol no... physics ftw

>>721157223
Y = 20 , X = 16.
The right-side triangle and the total triangle are similar because they share two angles. Ratio is 10:8 from small side. From there it's a system of two equations

Fuckin mathfags..

>>721159501
Fucking normal fag

>>721157223
There's a board for this

Shouldn't we use law of sines?

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842KB, 1080x1920px

>>721159509
You should live stream the kill

>>721159483
Disclaimer for the people who can't tell, this is either a troll or retarded

Y=20
X=16

How many Jellybeans are in a jar true or false?

>>721160042
True. OP's forehead is a jellybean within a jarhead.

>>721160493
kek

>>721160493
Nigga that ain't gonna stay 9 then

>>721160863
shh