a) Given that sin θ = 5/13 and θ is acute, find without using tables or calculator, the values of:
(i) cos θ
(ii) tan θ
(iii) sin 2θ

b) The angle of elevation of the top of a vertical tower from a point P on horizontal ground is 23.6°. From another point Q, which is 50 m closer to the foot of the tower on the same horizontal ground, the angle of elevation of the top of the tower is 41.2°. Calculate, correct to three significant figures:
(i) the height of the tower
(ii) the distance PQ from the foot of the tower to P

Question

a) Given that sin θ = 5/13 and θ is acute, find without using tables or calculator, the values of:
   (i) cos θ
   (ii) tan θ
   (iii) sin 2θ

b) The angle of elevation of the top of a vertical tower from a point P on horizontal ground is 23.6°. From another point Q, which is 50 m closer to the foot of the tower on the same horizontal ground, the angle of elevation of the top of the tower is 41.2°. Calculate, correct to three significant figures:
   (i) the height of the tower
   (ii) the distance PQ from the foot of the tower to P

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Answer

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Answer

B) null

Answer

C) null

Answer

D) null

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