Law of sines for missing angle | Trig identities and examples | Trigonometry | Khan Academy

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[SaisBlade]

what about the alternate solution?

this is correct:
sin(θ) = (4/3) * sin(40°)
θ = 58.99°

but by the identity sin(x) = sin(180-x)
another solution is θ = 121.01°
therefor the final angle would have two possible values:
81.01°, or 18.99°

[yslplgw]

Thank you, Mr. Khan, you have helped my schooling progress ! I love your work Mr. Khan, thank you again !

[adls]

THANK YOU SO MUCH... I'm an 8th grader thats taking trig and I was left confuzed

[demonetizedhistory]

IT'S TAKEN ME DAYS BUT IM HAPPPYYYY KHANNNN when you said to figure the problem out at the beginning, using ur other videos i was able to do it. In all honesty i love u man and i feel smarter now

[matriedevenokahalukamati]

I want to know, how can you determine if you need to use sine or cosine guys?

[MrBoom]

What program does he use for the calculator?

[chrismendoza]

Hello, how did you make a fraction 4/3? Pls I don't get it

[Jo-_-Jo]

how does he draw so good with a mouse :0

[lrvpiqo]

Make your words a bit small can't even see the working outs to the problem .

[cooperkress]

Having the bottom length being the same as one of the angles makes a terrible example

[aditopguy]

can someone explain how 40*(sin40/30) becomes 4/3sin40 at 3:28?

[riyadhbaksh]

Couldn't there be ambiguity in this question?