Question

Find a and B.


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Answer 1

Answer:

a = 80

b=50

Am i correct

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Answer 2

Answer:

a = 80°, b = 50°

Step-by-step explanation:

In the given figure,

a = 40 x 2 = 80° (The angle subtended by an arc at the centre is twice the angle subtended at the circumference)

Consider the ∆ containing a and b,

I'm naming the triangle as ∆OAB,

OA = OB (Radii of the same circle)

Therefore,

∆OAB is isoceles,

b = 180-a/2

=180-80/2 = 100/2 = 50°

Hope it helps...❤️