Tan (x + π/2) = [sin (x + π/2) / cos (x + π/2)] = [sin x cos π/2 + sin π/2 cos x] / [cos x cos π/2 - sin x sin π/2] = cos x / - sin x = -cot x
Answer:
explain please
Step-by-step explanation:
Answer:
10
6
4
Step-by-step explanation:
See the attached picture:
Answer:
D.) $320
Step-by-step explanation:
4% of 8,000
so
0.04 x 8,000
= 320
