Which vitamin plays an important role in blood clotting?

• A. vitamin A
• B. Vitamin K
• C. Vitamin B12
• D. Vitamin C

This question is based on William Shakespeare' s Twelfth Night.

Come away, come away, death,

And in sad cypress let me be laid...

In the lines above, the character is

• A. expressing his unhappiness about death
• B. expressing his preference for a cypress coffin
• C. lamenting over his unreciprocated love
• D. wishing for death to come

Which of the following statement is not true of dendritic pattern of drainage?

• A. it is characterized by irregular branching of tributaries
• B. the tributaries are formed at an acute angle
• C. they develop on homogeneous rock surfaces
• D. they are formed on heterogeneous rock surfaces

Which of the following species correctly represented an ion of M with 13 protons and 10 electrons?

• A.₁₀M³⁺
• B.₁₀M^3-
• C.₁₃M³⁺
• D.₁₃M^3-

What number should be subtracted from the sum of 2 \(\frac{1}{6}\) and 2\(\frac{7}{12}\) to give 3\(\frac{1}{4}\)?

• A. \(\frac{1}{3}\)
• B. 1\(\frac{1}{2}\)
• C. 1\(\frac{1}{6}\)
• D. \(\frac{1}{2}\)

Which of the following sea routes carries the heaviest traffic?

• A. the size canal route
• B. the north Atlantic sea route
• C. the capre route
• D. the panama canal route

In Nigeria, continentality poses the greatest hindrance to economic development in the

• A. Niger Delta
• B. Niger Benue Trough
• C. Cross River Basin
• D. Chad Basin

Which of the following possesses mammary gland?

• A. Dogfish
• B. whale
• C. shark
• D. catfish

Which of the following is not a pre-planting operations?

• A. land clearing
• B. Stumping
• C. Thinning
• D. Farm layout

(a) Copy and complete the following table of values for \(y = 9 \cos x + 5 \sin x\) to one decimal place.

(b) Using a scale of 2cm to 30° on the x- axis and 2 cm to 1 unit on the y- axis, draw the graph of \(y = 9 \cos x + 5 \sin x\) for \(0° \leq x \leq 210°\).

(c) Use your graph to solve the equation: (i) \(9\cos x + 5\sin x = 0\); (ii) \(9\cos x+ 5\sin x = 3.5\), correct to the nearest degree.

(d) Find the maximum value of y correct to one decimal place.