Question 7

(a) Copy and complete the table of values for the relation \(y = 2 \sin x + 1\)

x 30° 60° 90° 120° 150° 180° 210° 240°

270°

y 1.0       2.7     0.0 -0.7  

(b) Using scales of 2 cm to 30° on  the x- axis and 2 cm to 1 unit on the y- axis, draw the graph of \(y = 2 \sin x + 1, 0° \leq x \leq 270°\).

(c) Use the graph to find the values of x for which \(\sin x = \frac{1}{4}\).

Theory

Question details

Exam body
WAEC
Subject
Mathematics
Year
2014
Question no.
#7
Type
Theory

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