Question

define plane angle and solid and hibe its SI unit​

Answer 1

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

Megha Singh answered this. the other two units are (A) plane angle dθ - it is the ratio of length of arc and the radius ,SI unit is radian. (b) solid angle dΩ -it is the ratio of the are of the spherical surface to that of the square of its radius. SI unit is Steradian.