The angle of elevation of the top of a tree from a point ...
The angle of elevation of the top of a tree from a point on the ground 60m away from the foot of the tree is 78°. Find the height of the tree correct to the nearest whole number.
148m
382m
282m
248m
Correct answer is C
\(\tan 78 = \frac{h}{60}\)
\(h = 60 \tan 78\)
\(h = 60 \times 4.705 = 282.27m\)
\(\approxeq\) 282m to the nearest whole number.
In the figure, TSP = 100° and PRQ = 20°. Find PQR. ...
Solve the following equation: \(\frac{2}{(2r - 1)}\) - \(\frac{5}{3}\) = \(\frac{1}{(r + ...
If \(y = \sqrt{ax-b}\) express x in terms of y, a and b...
The relation y = x2 + 2x + k passes through the point (2,0). Find the value of k...
The minimum value of y in the equation y = x\(^2\) - 6x + 8 is...
If y = x sin x, Find \(\frac{d^2 y}{d^2 x}\)...
In the figure, YXZ = 30o, XYZ = 105o and XY = 8cm. Calculate YZ...