Do you guys know trig equations? Solve this
>>28501211
i think theres a math board for this type of stuff
>>28501211
its -.75
>>28501264
what? no, find the degree for theta
arcsin(-3/4) = theta
>>28501291
I did. subtract 3 from both sides, then divide by 4. sin theta = -.75.
that's the answer.
t. masters in mathmatics from unc-chapel hill
arcsin(-3/4), which is around 48.59 degrees
do your own fucking homework dumbass
>>28501246
Fuck no. /sci/ isn't for homework. Also, it's -48.59 degrees or 311.41 degrees.
if you enjoy math youre autistic
>>28501401
to correct myself i meant -48.59 degrees, disregard my post i suck cocks
>>28501387
solve for theta you twit
no shit you can do basic algebra he's asking about trig equations
masters my ass xD
Move the 3 to the left and negate it
Then you divide both sides by 4
After that you'll have that sinx = -3/4 and if you're at least half retard you should know how to finish it with the arcsin function
>>28501444
w3w, R(K sure is full of teens these days
>>28501387
you need to inverse sine ( sin^-1(-3/4) ) then to find degree, but I dont know if -48.6 will justify.... and then i need to find the other degree that matches it since sine on the graph as two quadrants that match.
>>28501442
but what about the other quadrant? does that matter??
>>28501291
>>28501401
>>28501410
>>28501442
>degrees
How is freshmen year in high school going?
>>28501515
>degrees aren't used in the STEM courses that are relevant to the real world at all guys
>>28501515
>I can't use the more common notation because I'm smarter than everyone else
mathway
>>28501211
What if I tell you there are two possible answers to this?
if you cant do this problem kill yourself please
>>28501626
If you're going to reference the cyclical nature of the trig functions, I'm going to say that there are infinite solutions.If not, i'm curious. please share
>>28501511
You need to realise that sin has a periodicity of 2pi. Unlike what everyone else is saying, this has an infinite number of solutions.
The solution set is:
theta = {2npi - arcsin(3/4) : n is an integer} U {pi(2n+1) + arcsin(3/4) : n in an integer}
This is seriously middle school level shit, fampai.
The arcsin(-3/4) Has an infinite number of solutions, but the closest to the origin is -48.59 degrees, -0.848 radians.
>>28501731
>The arcsin(-3/4) Has an infinite number of solutions
That's wrong.
OP's equation has an infinite number of solutions, but the function arcsin itself is the inverse of sin restricted to -pi to pi, so is a bijection.
i.e. for all x in the domain of arcsin, there exists a unique y in the range such that y = arcsin(x)
>>28501992
this should be at:
>>28501920
>>28501920
ty man you saved the world
>trig
?
looks like simple rearrangement
>>28501444
arcsin(-.75), also OP only said solve this, not what to solve for. Precise language is key in math.
>>28501211
Sine of theta equals negative three fourths.
Theta itself can be found by using the sine inverse function of negative three fourths, which is to say at what degree or radian the sine function will equal negative three fourths.
arcsine of negative three fourths is about negative 48.6 degrees. Theta prime is just 48.6 degrees, and since theta is in quadrant four we will take 360 degrees minus 48.6 degrees for the final answer of 311.4 degrees.
The answer could be written as -48.6 degree, or 311.4 degree, both are in the same position in quadrant four.
If you want to convert any of the answers to radians then take the degree, multiply it by pi and divide it by 180 degrees. Or you could do the problem on your calculator in radians mode either way.
There are infinite solutions you dumb fucks, my god.
>>28501560
Pretty much every single STEM course will use radians
