When an aeroplane is 800m above the ground, its angle of ...
When an aeroplane is 800m above the ground, its angle of elevation from a point P on the ground is 30o. How far is the plane from P by line of sight?
400m
800m
1500m
1600m
1700m
Correct answer is D
From the diagram, sin30=800x
x=800sin30
= 8000.5
= 1600 m
Factorise completely: 32x2y - 48x3y3...
In the diagram, angle QPR = 90o, angle PSR = 90o and PR = 5 units. Find the length of QS....
Find the inequality which represents the shaded portion in the diagram ...
From the diagram above, find the required roots/region of x. ...
Find the value(s) of x for which the expression is undefined: 6x−1x2+4x−5...