ON 2 Convert the following radials to degrees without the use of a calculator. \( \frac{5 \pi}{4} \) radials Convert the following to degrees only (round off to two decimal places \( 54^{\circ} 24^{\prime} 62^{\prime \prime} \) Convert the following to degrees, minutes and seconds \( 36.75^{\circ} \) Convert the following to radials in terms of \( \pi \) : \( 45^{\circ} \) The central angle of a circle with a radius of 7 cm and \( 85^{\circ} \). Determine the length of the arc. GRAND TOTAL 20 MARKS

Determine whether each point lies on the graph of the equation. \[ 2 x^{2}+6 y^{2}=9 \] (a) \( (8,0) \) Yes, the point is on the graph. No, the point is not on the graph. (b) \( (0,4) \) Yes, the point is on the graph. No, the point is not on the graph.

The quadratic equation \( y=-16 r^{2}+40 t+2 \) represents the height of a projectile, \( y \), in feet, at a particular time, \( t \), in seconds. For what interval or intorvals of time will the projectilo be above 18 foet? \[ \begin{array}{l}\text { a) Between } 1 \text { and } 1.5 \text { seconds } \\ \text { b) Between } 0.5 \text { and } 2 \text { seconds } \\ \text { a) Less than } 1 \text { second and greater than } 1.5 \text { seconds } \\ \text { di) Less than } 0.5 \text { second and greater than } 2 \text { seconds }\end{array} \]

Differentiate \( y=\cosh ^{-1}\left(\frac{5 x}{2}\right) \)

What is the domain and range of the function \( y=\sqrt{2 x-10} \) ? a.) domain: \( x \geq 5 \), range: \( y \geq 0 \) b.) domain: \( x \leq 0 \), range: \( y \leq 5 \) c.) domain: \( x \geq 0 \), range: \( y \geq 5 \) d.) domain: \( x \leq 5 \), range: \( y \leq 0 \)

44. Calculer les limites suivantes. \( \begin{array}{ll}\text { 1. } \lim _{n \rightarrow+\infty} \frac{-3 n}{2 \mathrm{e}^{-n}} & \text { 2. } \lim _{n \rightarrow+\infty} \frac{2}{\sqrt{n}}(3 n-4) \\ \text { 3. } \lim _{n \rightarrow+\infty} \frac{-2 n^{3}}{n^{2}+5 n+1} & \text { 4. } \lim _{n \rightarrow+\infty} \frac{5 n-n^{2}}{2 n^{4}-6 n^{2}}\end{array} \)