Q. 35.0( 1 Vote )

# In the given figu

Given: BOC is the diameter of the circle

AB = AC

Here, BAC forms a semicircle.

We know that angle in a semicircle is always 90

BAC = 90

Here ABC = ACB (since angles opposite equal sides are equal in a triangle)

We know that sum of all the angles in the triangle is 180

That is

ABC + ACB + BAC = 180

2 × ABC + BAC = 180

2 × ABC + 90 = 180

2 × ABC = 180 – 90

2 ×ABC = 90

ABC = 45

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