Question

Verify :
cot A + sec A cscA = tan A.​

Answer 1

Answer:

LHS cot A + tan A = cosAsinA + sinAcosA = cos^2A + sin^2AsinAcosA = 1sinAcosA { sin^2x + cos^2x = 1 } = cosec Asec A = RHS Hence proved

Answer 2

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Marginal information are the peripheral information on the edge of the map that provides useful information about the map to the map user.

The Scale Note is a representative fraction, which gives the ratio of map distance to the corresponding distance on the earth surface