Answer
Statement 'a' is false.
Work Step by Step
Exact value of $\sin 30^{\circ}$ is $\frac{1}{2}$ and not $\frac{\sqrt 3}{2}$
Trigonometry 7th Edition
by McKeague, Charles P.; Turner, Mark D.
Published by
Cengage Learning
ISBN 10:
1111826854
ISBN 13:
978-1-11182-685-7
Chapter 2 - Section 2.1 - Definition II: Right Triangle Trigonometry - 2.1 Problem Set - Page 64: 81
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