PLz answer for this question . I had asked this question previously also . I could not find the same question asked by any other student . SO plz answer this .

Asked by  | 3rd Jan, 2013, 12:32: PM

Expert Answer:

We know that the angle subtended by an arc at the centre is double the angle subtended by it at any point on the remaining part of the circle.
 
Therefore,
angle y = 2* angle z
angle x = 2* angle t
 
Adding, we get,
angle x + angle y = 2(angle t + angle z)

Answered by  | 3rd Jan, 2013, 01:45: PM

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