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(b) (i)

tan 10º = Height of tower/ 60 m

Height of tower = 10.57 m

(ii) Greatest angle of elevation of T viewed from PR is at the point with the shortest distance between S and RP. So it happened to be at the point which is on a line from S perpendicular to PR.

Distance from S to perpendicular interesection on PR = 60 sin 70º m = 56.38 m

Biggest angle of elevation of T viewed from PR = tan-1 (10.57/56.38) = 10.62º

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