A,C and D are points on a circle of radius 4 cm, centre o. BA and BC are tangents to the circle. OB=10cm work out the length of arc ADC. give your answer correct to 3 significant figures
Answers
Answer:
Step-by-step explanation:
OB = 10 cm
OA = OC = Radius = 4 cm
COS <AB = OA/OB = 4/10 = 2/5 =
COS< COB = OC/OB = 4/10 = 2/5
=> <AOC = <AOB + <COB
=> <AOC = Cos-¹(2/5) + Cos-¹(2/5)
=> <AOC = 2 Cos-¹(2/5)
=> <AOC = 2 * 66.42
=> <AOC = 132.84°
if D is in minor arc then length of arc ADC. = ( 132.84°/360°) 2π = 9.274 cm
if D is in major arc then length of arc ADC. = ((360° -132.84°)/360°) 2π = 15.859 cm
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Each new line represents the change stated in the question.
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Step-by-step explanation:
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Step-by-step explanation:
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Answers
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Answers
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Question 8 of 19
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Answers
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Step-by-step explanation:
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Answers
Answer:
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Answer:
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Answer:
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it was on a mathcounts competition
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Q5)2.7
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Answers
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Step-by-step explanation:
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Explanation:
A P E X
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Answers
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Answer:
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Step-by-step explanation:
help show work
assig 8
(a)solve the inequality
(b)graph the solution on the real number line.
(c)write the solution in interval notation.
29
30
31
32
33
Answers
Answer: see below
Step-by-step explanation:
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Graph: ←--------- ·
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Interval Notation: (-∞, 6]
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x > 10
Graph: o---------→
10
Interval Notation: (10, ∞)
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+5 +5
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Interval Notation: [-3, ∞)
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x < -4
Graph: ←---------o
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x > -5
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if the sides of a rectangle are 12 and 15, then the diagonal is
Answers
Answer:3x41 squared
Step-by-step explanation: