Find the value of sin 140° rounded to four significant digits.
A) 0.6428
B) -1.0000
C) 0.2214
D) 0.3214
E) 0.2428

Name: Find the value of sin 140° rounded to four significant digits. A) 0.6428 B) -1.0000 C) 0.2214 D) 0.3214 E) 0.2428
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Quizplus · Accepted Answer

The value of sin 140° can be found using the unit circle or a calculator. Since 140° is in the second quadrant, where sine values are positive, the correct answer is A) 0.6428, rounded to four significant digits.

Find the Value of Sin 140° Rounded to Four Significant