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The circle omega touches the circle Omeg...

The circle `omega` touches the circle `Omega` internally at P. The centre O of `Omega` is outside `omega`. Let XY be a diameter of `Omega` which is also tangent to `omega`. Assume PY > PX. Let PY intersect `omega` at Z. If YZ= 2PZ ,what is the magnitude of `/_`PYX in degrees? Ans: 15]

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