Answer:
The answer is 2pi
Step-by-step explanation:
To find the area of a cirlce, use the equation ( pi * r^2 ) so for a semi circle, which is half, simply divide that by 2. Plug in 2 for radius and you get 4pi/2 which simplifies to 2pi.
Use tan(angle) = opposite leg/ adjacent leg
BC = tan(45) = x/100
X = tan(45) x 100
X = 100
BD = tan(60) = x/100
X = tan(60) x 100
X = 173
DC = BD - BC = 173-100 = 73
DC = 73
Answer:
Step-by-step explanation:
sin(-430)=-sin(430)=-sin(360+70)=-sin 70
