8
QuizMultiple Choice

Solving Trigonometric Equations — Quiz

Question 8 • Precalculus

Which is equivalent to sine inverse of negative 0 point 4 ? Round your answer to the nearest hundredth of a radian.

Answer
A
negative 0 point 6 0
B
negative 2 point 5 0
C
negative 0 point 3 9
D
negative 0 point 4 1

Explanation

The inverse sine gives the angle whose sine is −0.4. Using a calculator in radian mode, sin⁻¹(−0.4) ≈ −0.4115 radians, which rounds to −0.41 radians to the nearest hundredth. Therefore, the equivalent value is negative 0.41.

AI-written and checked against the verified answer.

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