16\.\* Show that a. sin( π 2 + iy) = 1 2 (ey + e−y ) = cosh y b. |sin z| ≥ 1 at all points on the square with vertices ±(N + 1 2 )π ± (N + 1 2 )πi, for any positive integer N. c. |sin z|→[infinity], as Imz = y → ±[infinity].

answer: option a.

step-by-step explanation:

you know that the quadrilateral opqr ( a four sided figure) is inscribed in circle. this means that all its vertices are on the circle.

then, by definition, the opposite angles of the quadrilateral are supplementary, this means that the sum of their measures is 180 degrees.

you can observe in the figure that the angles ∠opq   and the angle ∠orq   are opposite, therefore:

then, can be used to d to calculate the measure of ∠opq

i believe it is b and c. (side note, i got the same computer from k-12 lol i’m in 8th grade and this is my first year, will it get

step-by-step explanation:

multiplication is multiplication.   it might feel harder depending on what level of math you are in, but generally it will be the same old stuff, while implementing some new concepts and methods of solving work.