Write i in trigonometric form. Since |i| = 1 and arg(i) = π/2, we have
i = exp(i π/2) = cos(π/2) + i sin(π/2)
By DeMoivre's theorem,
i² = exp(i π/2)² = exp(i π) = cos(π) + i sin(π)
and it follows that i² = -1 since cos(π) = -1 and sin(π) = 0.
Answer:
A - 23ft
Step-by-step explanation:
Pythagorean theorem: 12^2 + 20^2 = X^2.
X^2 = 544. X = sqrt(544) which is around 23ft
Step-by-step explanation:
1)90-50= 40°
2)90-25= 65°
3)90-80=10°
Answer:
It is 33.18
Step-by-step explanation: first you do 0.05 x 4= 0.2 then you add all the other number which = 33.18