From a point P on the ground the angle of elevation of the top of a 10 m tall building is 30°. A flag is hoisted at the top of the building and angle of elevation of the top of the flagstaff from P is 45°.
(i) Find the length of flagstaff.
(a) 6.32 m
(b) 7.32 m
(c) 8.32 m
(d) 9.32 m
(ii) Find the distance of the building from the point P
(a) 17.32 m
(b) 18.32 m
(c) 19.32 m
(d) 20.32 m
(iii) What is the value of tan 30o?
(a) 1
(b) 3/2
(c) 3
(d) 1/3
(iv) What is the value of tan 45o?
(a) 2
(b) 0
(c) 1
(d) 3/2
(v) Write the Pythagoras theorem for ΔAPB.
(a) BP2 = AB2 + AP2
(b) AB2 = AP2 + BP2
(c) AP2 = AB2 + BP2
(d) None of these
