Answer:
(a) 100° , (b) 235°
Step-by-step explanation:
the bearing is the angle measured in a clockwise direction from the north line.
(a)
the bearing of D from C is the angle NCD
∠ NCD = 100°
then the bearing of D from C is 100°
(b)
the bearing is the angle from the north line at C , measured clockwise to D
that is the green shaded ∠ NCD = 235°
the bearing of D from C is 235°
Step-by-step explanation:
m< AOC = 90°
m< AOB +m<BOC = 90°
6x-12+3x +30 = 90°
9x +18° = 90°
9x = 90- 18° = 72°
x = 8°
m<AOB =6(8)-12 = 48-12 = 36°
No solution it’s infinite
Answer:
there were 63,000L of water initially in the pool
Step-by-step explanation:
do 900L times the first 20 minutes to find out how much water was drained during the first 20 minutes and you get 18,000L drained
then, add 18,000L plus the rest of the 45,000L of water drained from the pool to get 63,000L of water intially in the pool
