Answer:
a = 49°
Step-by-step explanation:
OB = OC ( both radii of the circle ), thus
Δ BOC is isosceles and the base angles are congruent, that is
∠ OBC = ∠ OCB = 41° , so
∠ BOC = 180° - (2 × 41)° = 180° - 82° = 98°
The angle on the circumference BAC is half the angle at the centre for angles subtended on the same arc , thus
a = 0.5 × 98° = 49°
Answer:
r^12 t^12
Step-by-step explanation:
Answer:
40
Step-by-step explanation:
D=2r so 2*20=40
Answer:
5, (0, -2)
6, (4, 9)
Step-by-step explanation:
Answer:
Step-by-step explanation: