For me this is a dead end, because I cannot compute trigonometric functions of multiples of pi/9. We must rely on a calculator: 0.7660+0.6428i -0.9397+0.3420i 0.1736-0.9848i

We know that the sine of 30 degrees (#pi/6# radians) satisfies the positive equality, so we can simply apply this to all 4 quadrants. For example, possible solutions include #pi/6, (5pi)/6, …

NOTE: I added #2pi# because the signs of "a" and "b" indicated that the number was in the 4th quadrant.

May 4, 2017 · A rational number is one that can be expressed as a fraction (and so 1 2 and 1 3 are rational but π and √2 aren't). So let's find some fractions between 1 8 and 1 5.

The number of km in the perimeter of a park is 8 greater than the number of square km in its area. What is the width? Geometry

If you're asking if cos^n(x+\\pi/2) = sin^n(x) for every even n, the answer is yes. Actually, its' true for every exponent n. Since you have the initial equality x=y, then x^n=y^n must always hold.

see below Charge is basically the instantaneous situation of the atom , which arouse due to the presences or absence of the electrons. Meaning Every thing is made up of atoms , and they …

The product is undefined, Matrices can only be multiplied if they are compatible. The number of columns in the first matrix must be the same as the number of rows of the second matrix. …

A transformer for a distribution line receives 2V ac and step up to 240V ac. The secondary contains 300 turns and draws 10 A. Calculate; 1). The number of turns in the primary coil? 2). …

Maria had 105 beads to start with. First define the number of beads each girl had using variables. Let the number of beads that Maria had be x Together they had 250, so the number of beads …