Question

Define solar and vector

Answer 1

The beta angle determines the percentage of time that a satellite in low Earth orbit (LEO) spends in direct sunlight, absorbing solar energy. The term is defined as the angle between the orbital plane of the satellite and thevector to the Sun (i.e., the direction from which the Sun is shining).

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Answer 2

not solar it is scalar-The physical quantity having only magnitude but do not have definite direction.ex-mass, length etc
Vector-The physical quantity which requires both magnitude and definite direction.ex-Velocity,force etc