there are no answers
for the practice test i did
q6. Novy leaves her base camp, O and walks in the direction 150°T until she reaches point A on the bank of the river.
Unable to cross the river, she follows it on a bearing of 030°T and stops at point C. The bearing and distance of C from O are 120°T
and 4km respectively
ii)show that angle OAC=60°
I proved it by drawing the diagram which is the first part of the diagram
figured out a few angles
proof
(co-interior angle sum is 180 on parallel lines)
Q5. A person on top of a building 49m in height wishes to find the height of an adjacent building.
If the angle of depression of the adjacent building is 47° 21' from where the person is standing and the
buildings are a distance of 12 m apart.
ii) Calculate the height of the adjacent building (2 dp)
my answer=35.97m
simplify
i) sin^2x - sin^2x cos^x
Thank you!!