> i really don't know how do they REMOVE the 2 pi twice so it would become 8pi.
Please help me!
>>sorry, please help me
= 4π + 3π/4
= csc (4π + 3π/3)
since csc 19π/4
= cos 19π/4 + i sin 19π/4
= cos (4π + 3π/4) + i sin (4π + 3π/4)
since both the cosine and the sine function have periods of 2π , adding or subtracting multiples of 2π will give us the same answer
so let's "remove " 4π
= cos 3π/4 + i sin 3π/4
= csc (3π/4)
csc 19π/4 = -1/√2 + i 1/√2
csc 3π/4 = -1/√2 + i 1/√2
I really have no idea what
csc 19pi/4 remove 2 pi -> (8pi/4) -> 11pi/4 -> 3pi/4
is supposed to mean.
unless the did this:
19π/4 - 2π = 11π/4
11π/4 - 2π = 3π/4 , which is what I did above.
the 8π/4 does not belong, it could just be a typo
pre-calculus - Graph the polar equation: 2=r cos(theta + 180) 2=r(costheta ...
Public High School Pre Calculus HH - Ok I do not know how to do this problem. I ...
Pre-Calculus - cos^2(x) + sin(x) = 1 - Find all solutions in the interval [0, ...
pre-calculus - how do i figure out whether to use 2"n"pi or "n"pi when solving a...
pre-calculus - (2^(4+pi))/ 2^(1+pi)
Pre-Cal - Find the 5 roots of x^5+1=0 in polar and Cartesian form. (x^5 means x ...
Calculus - find all discontinunities and remove if possible: F(x)= 2x if x<_0...
pre-calculus - If sin a = 3/5 when Pi/2<a<Pi and cos B = -12/13 when Pi<...
Pre Calculus - Pre Calculus why is sin(-20)/cos 380 equal to tan (-200)
Calculus Check - The region R is bounded by the x-axis, x = 1, x = 3, and y = 1/...