Use a calculator to evaluate the trigonometric function. Round your answer to four decimal places. (Be sure the calculator is set in the correct angle mode.) $$\sin ( - 0.75 )$$
A) $\sin ( - 0.75 ) \approx - 2.6816$
B) $\sin ( - 0.75 ) \approx 2.6816$
C) $\sin ( - 0.75 ) \approx - 0.6816$
D) $\sin ( - 0.75 ) \approx 1.6816$
E) $\sin ( - 0.75 ) \approx 0.6816$

Question

Use a calculator to evaluate the trigonometric function. Round your answer to four decimal places. (Be sure the calculator is set in the correct angle mode.) $$\sin ( - 0.75 )$$ 
A) $\sin ( - 0.75 ) \approx - 2.6816$
B) $\sin ( - 0.75 ) \approx 2.6816$
C) $\sin ( - 0.75 ) \approx - 0.6816$
D) $\sin ( - 0.75 ) \approx 1.6816$
E) $\sin ( - 0.75 ) \approx 0.6816$

Quizplus · Accepted Answer

When evaluating a trigonometric function on a calculator, make sure the calculator is in the correct angle mode (degrees or radians). In this case, since the given angle is in decimal form, it is unlikely to be in degrees or radians. Therefore, we cannot evaluate the function using a calculator. However, we know that the sine function outputs values between -1 and 1, so any answer outside that range is impossible. Of the answer choices, only C (-0.6816) falls within the range of possible answers.

Use a Calculator to Evaluate the Trigonometric Function sin⁡(−0.75)\sin ( - 0.75 )sin(−0.75)

Use a Calculator to Evaluate the Trigonometric Function $\sin ( - 0.75 )$