i want to become a doctor.but i m nt sure that i should get.what ll i do?

Please be a bit more precise in your question so that it can be effectively answered.

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A three-dimensional angle, formed by three or more planes intersecting at a common point. Its magnitude is measured in steradians, a unitless measure. The corner of a room forms a solid angle, as does the apex of a cone; one can imagine an indefinite number of planes forming the smooth round surface of the cone all intersecting at the apex. Solid angles are commonly used in photometry.

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What are you looking for?