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Questions Asked

Spectrum:
Group Title
@hartnn please look at english chat .now
 updated 7 months ago
 6 replies
 No Medals Yet
Mathematics

Spectrum:
Group Title
Which expression is a cube root of 2?
A(3sqrts(2) (cos(90) + i sin(90))
B(3sqrts(2) (cos(60) + i sin(60))
…
 updated one year ago
 17 replies
 1 Medal
Mathematics

Spectrum:
Group Title
Find all solutions to the equation csc x (2sinxsqrt(2)) = 0
A. x= Pi/4 + kPi , where k is any positive integer.
B. x= Pi/4 +2kPI and 7Pi/…
 updated one year ago
 18 replies
 No Medals Yet
Mathematics

Spectrum:
Group Title
Which of the following are solutions to the equation tan^2(2x)  1 = 0? Check all that apply.
a. pI/4
B. PI/2
…
 updated one year ago
 20 replies
 1 Medal
Mathematics

Spectrum:
Group Title
What is true about the complex number 5  5i? Check all that apply.
A. It lies in quadrant 3.
B. The modulus is 5.
…
 updated one year ago
 25 replies
 1 Medal
Mathematics

Spectrum:
Group Title
Use De Moivre's theorem to write the complex number in trigonometric form.
(√2 + i√2)^3
…
 updated one year ago
 5 replies
 1 Medal
Mathematics

Spectrum:
Group Title
Find the quotient of z1 by z2. Express your answer in trigonometric form.
z1 = 4(cos(pi/3) + isin(pi/3))
z2 = 3(cos(2pi/5) + isin(2pi/5))
…
 updated one year ago
 13 replies
 No Medals Yet
Mathematics

Spectrum:
Group Title
Find the quotient of the complex numbers. Express your answer in trigonometric form.
z1= 5(Cos25degrees) + i sin(25degrees))
z2= 2(cos80de…
 updated one year ago
 13 replies
 No Medals Yet
Mathematics

Spectrum:
Group Title
Which complex number's graph is shown?
A. 2( cos(45degrees) + i sin(45degrees))
B. 2 (cos(135 degrees) + i sin(135degrees))
…
 updated one year ago
 3 replies
 No Medals Yet
Mathematics

Spectrum:
Group Title
Convert the polar representation of this complex number into its rectangular form:
z=7(cos(pi/2)+ i sin(pi/2))
A. (0,7)
…
 updated one year ago
 10 replies
 1 Medal
Mathematics

Spectrum:
Group Title
Evaluate the following expression: 3(1,1)  (4,2).
A.(0,4)
B.(3,2)
…
 updated one year ago
 3 replies
 2 Medals
Mathematics

Spectrum:
Group Title
In the triangle, b = _____. If necessary, round your answer to two decimal places.
…
 updated one year ago
 33 replies
 No Medals Yet
Mathematics

Spectrum:
Group Title
Check this out
…
 updated one year ago
 24 replies
 1 Medal
Mathematics

Spectrum:
Group Title
Use the law of cosines to find the value of 2(3)4 costheta
a. 24
b. 24
…
 updated one year ago
 3 replies
 No Medals Yet
Mathematics

Spectrum:
Group Title
sin(pi/4)sin(pi/6) = 1/2 (___(pi/12) cos (5PI/12)
could be most likely sin,cos, tan, etc
 updated one year ago
 13 replies
 1 Medal
Mathematics

Spectrum:
Group Title
if sinx = 3/5 and x is in quadrant 3, then tan2x= ___
a. 24/7
b. 12/7
…
 updated one year ago
 8 replies
 No Medals Yet
Mathematics

Spectrum:
Group Title
if sinx = 3/5 and x is in quadrant 3, then tan2x= ___
a. 24/7
b. 12/7
…
 updated one year ago
 No Medals Yet
Mathematics

Spectrum:
Group Title
1+cos(12x) = ____
a. 2sin^2(12x)
b. 2cos^2(6x)
…
 updated one year ago
 5 replies
 No Medals Yet
Mathematics

Spectrum:
Group Title
sin(Pi/3) _____ (Pi/6) = 1/2( sin(PI/2) + sin(pi/6) )
…
 updated one year ago
 20 replies
 No Medals Yet
Mathematics

Spectrum:
Group Title
Let h = vo^2/4.9 sin(theta) cos(theta) model the horiontal distance in meters traveled by a projectile. If the initial velocity is 36 mete…
 updated one year ago
 14 replies
 No Medals Yet
Mathematics

Spectrum:
Group Title
to solve the equation 2sin(2x) = cosx , you should rewite it as ___
a. 2sinx + cosx = 0
b cosx(4sinx1)= 0
…
 updated one year ago
 5 replies
 No Medals Yet
Mathematics

Spectrum:
Group Title
(____) ^2 = (secx 1) (secx +1)
…
 updated one year ago
 26 replies
 1 Medal
Mathematics

Spectrum:
Group Title
____Cosb= 1/2 [ sin(a+b) + sin (ab)
a. sinb
…
 updated one year ago
 17 replies
 2 Medals
Mathematics

Spectrum:
Group Title
If sinx cos(Pi/7)  sin (Pi/7) cos x =  (sqrt(2) )/ 2 , then x can equal which of the following answerS <notice S ....
A. (5Pi)/4 + PI…
 updated one year ago
 No Medals Yet
Mathematics

Spectrum:
Group Title
if sinx = 5/13 and x is in quadrant 1, then sin x /2 = .....
a.  sqrt(5/26)
b. sqrt(5/26)
…
 updated one year ago
 16 replies
 No Medals Yet
Mathematics

Spectrum:
Group Title
cos(a/2) = + or  sqrt(1 + cos a / 2 ) for all values of a. True or false?
 updated one year ago
 2 replies
 1 Medal
Mathematics

Spectrum:
Group Title
sin(x) = cosx for all the values of x
true or false ?
 updated one year ago
 7 replies
 1 Medal
Mathematics

Spectrum:
Group Title
sin(x) = cosx for all the values of x
true or false ?
 updated one year ago
 No Medals Yet
Mathematics

Spectrum:
Group Title
sin(ab) = sinacosb+cosasinb for all values of a and b. True or false?
 updated one year ago
 6 replies
 3 Medals
Mathematics

Spectrum:
Group Title
Test
…
 updated one year ago
 7 replies
 1 Medal
Mathematics
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