Trigonometry - Jamb Mathematics Past Questions with Answers

Jamb Mathematics Past Questions

Questions and Answers on Trigonometry

Question 26:

JAMB 1981

If sine x equals cosine x, what is x in radians?

A.

\frac{π}{2}

\frac{π}{3}

\frac{π}{4}

\frac{π}{6}

\frac{π}{12}

View Answer & Explanation

Question 27:

JAMB 1981

\sin x ° = \frac{a}{b}

, what is

\sin (90 - x) °

?

A.

\frac{\sqrt{b^{2} - a^{2}}}{b}

B. 1

\frac{- a}{b}

\frac{b^{2} - a^{2}}{b}

\frac{a^{2} - b^{2}}{b}

\sqrt{b^{2} - a^{3}}

View Answer & Explanation

Question 28:

JAMB 1981

Show that

\frac{\sin 2 x}{1 + \cos x}

\frac{s i n 2 x}{1 - c o s x}

is

A. Sin x
B. Cos²x
C. 2
D. 3

View Answer & Explanation

Question 29:

JAMB 1982

If sin

θ

\frac{m - n}{m + n}

; Find the value of 1 + tan2

θ

\frac{(m^{2} + n^{2})}{m + n}

\frac{(m^{2} + n^{2} + 2 m n)}{4 m n}

\frac{2 (m^{2} + n^{2} + m n)}{m + n}

\frac{(m^{2} + n^{2} + m n)}{m + n}

View Answer & Explanation

Question 30:

JAMB 1983

Given that cos z = L , whrere z is an acute angle, find an expression for

\frac{\cot z - \csc z}{\sec z + \tan z}

\frac{1 - L}{1 + L}

\frac{L^{2} \sqrt{3}}{1 + L}

\frac{1 + L^{3}}{L^{2}}

\frac{L (L - 1)}{1 - L + 1 \sqrt{1 - L^{2}}}

View Answer & Explanation

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Trigonometry - Jamb Mathematics Past Questions and Answers

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Jamb Mathematics Past Questions

Questions and Answers on Trigonometry

Question 26:

Question 27:

Question 28:

Question 29:

Question 30:

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