Date: Name: n!frr-r Section 3.2 Extra Practice 5. Determine the measure of each indicated 1. Write each ratio in lowest terms. angle. Express your answer to the nearest a) sin A degree. 6 a) Ab) 2.1 b) cos A \t o\I c) sin B \t \l\t d) cos B 4 \l\ 2. Evaluate each trigonometric ratio, to four B d) decimal placei. eyt ,/l b) cos 12" d) cos 85" a) sin 35" 4 A /AJ /t c) sin 78" I /) 3. Determine the measure of each angle, to the 4.4 nearest degree. A 0 L a) sinfl-- c) sin C b) cosB:0.1564 * A.4540 d) cos0 = A.6820 a 6. If the kite string in the figure is 120 m long, calculate the height of the kite. Express your answer to the nearest tenth of a metre. 4. Determine each length ofx. Express your answer to one decimal place. a) f'- t\ *lt\ \rs 32"\ h b) 7. Bill is renovating his house. He braces a wall with an 8-ft wall brace, as shown. The distance from the wall to the lower end of the brace (on the floor) is2.4 ft. Calculate the , angle at which the brace meets the wall. Express your answer tp the nearest degree. x \-5o-q \to\l \t\ c) ,,-lt 6.4 '-t =:423"-----n I L d) tc 2.4ft Copyright O 2010, McGraw-Hill Ryerson Limited, a subsidiary of the McGraw-Hill Companies. All rights reserved. This page may be reproduced for classroom use by the purchaser of this book without written permission of the publisher.
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