The value of 2 sin 30° + 5 cos 60° + 3 sin 180° is:
\( \frac{1}{2} \)
\( \frac{7}{2} \)
-\( \frac{1}{2} \)
\( \frac{9}{2} \)
The adjacent sides of a parallelogram are 4a and 3a. If the angle between them is 60°, then one of the diagonals of the parallelogram will be:
The numerator of a fraction is increased by 20% and the denominator is decreased by 50%. If the resultant fraction is \( \frac{5}{6} \), then what will be the original fraction?
\( \frac{25}{84} \)
\( \frac{25}{72} \)
\( \frac{72}{25} \)
\( \frac{25}{12} \)