The lengths of the sides of a triangle are 15m, 21m, and ...
The lengths of the sides of a triangle are 15m, 21m, and 28cm. What is the size of the angle facing the side 21m (correct to one decimal place)?
85.7°
47.5°
41.4°
38.2°
Correct answer is B
using cosine rule,
cosθ = 282+152−2122×28×15
= 568840
θ=cos−1
= 47.5°
If m∗n=(mn−nm) for m, n belong to R, evaluate -3*4 ...
Solve the equation (x - 2) (x - 3) = 12...
Find the mean of t + 2, 2t - 4, 3t + 2 and 2t....
List all integer values of x satisfying the inequality -1 < 2x - 5 ≤ 5...
If K is a constant, which of the following equations best describes the parabola? ...
At what rate would a sum of N100.00 deposited for 5 years raise an interest of N7.50? ...