OBLICZ.

OBLICZ. Maria: 1. sin140+sin(−140) 2. sin 21π/2 − sin(−21/2 * π)

4 sty 03:28

Jerzy: 1) = sin140 − sin140 = 0 2) = sin(21π/2) + sin(21π/2) = 2sin(21π/2) = 2sin(10*π + π/2) = 2sin(π/2) = 2*1 = 2

4 sty 07:57