1) tg 360 = tg 0 = 0
Therefore, the result is 0 - 3/4 - 1/4 = -1
2) 2ctg 90 = 2 * 0 = 0
Therefore, the result is 0 - 0 + 0 = 0
1) tg 360 = tg 0 = 0
3/4 sin 270 = -3/41/4 cos 180 = -1/4Therefore, the result is 0 - 3/4 - 1/4 = -1
2) 2ctg 90 = 2 * 0 = 0
3 cos 270 = -3 0 = 05 sin 0 = 5 0 = 0
Therefore, the result is 0 - 0 + 0 = 0