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White raven [17]
3 years ago
13

How do I work out this problem? I’m not sure which circle theorems would apply etc.

Mathematics
1 answer:
Westkost [7]3 years ago
8 0
Angle BCA =30 (angle in the same segment)
x=180-90-30=60
angle DBA =72/2 =36 (angle at centre twice angle at circumference)
y=36 (angles in alt segment)
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Step-by-step explanation:

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3 years ago
Find w please help me
Keith_Richards [23]

Answer:

w = 77°

Step-by-step explanation:

From the picture attached,

WXYZ is a quadrilateral having 4 interior angles,

m∠y = 90°

Therefore, (2x - 10) = 90°

2x = 90 + 10

2x = 100

x = 50

Now, m∠z = (x + 15)° = 65°

m∠x = (3x - 22)° = 150 - 22

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Therefore, measure of w = 77°

4 0
4 years ago
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Andrej [43]
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3 years ago
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