2
1
0
-1
-2
Correct answer is A
Note: sin 20° = cos 70° hence
\frac{\sin 20}{\cos 70} = 1
Also, cos 65° = sin 25°
\frac{\cos 65}{\sin 25} = 1
\therefore \frac{\sin 20}{\cos 70} + \frac{\cos 65}{\sin 25}
= 1 + 1
= 2
A binary operation \ast is defined on a set of real numbers by x \ast y = xy for all real va...
Find the range of 1/6, 1/3, 3/2, 2/3, 8/9 and 4/3 ...
The interior angles of a quadrilateral are (x + 15)°, (2x - 45)°, ( x - 30)° and (x...
A pair of shoes was sold for N2,250.00 at a loss of 10%. What was the cost price?...
What fraction must be subtracted from the sum of 2\frac{1}{6} and 2\frac{7}{12} to give \(3\...
In the diagram |XY| = 12cm, |XZ| = 9cm, |ZN| = 3cm and ZY||NM, calculate |MY| ...