Determine whether the statement is true or false.
-sin 390° = sin 120° cos 270° + cos 120° sin 270°

Name: Determine whether the statement is true or false. -sin 390° = sin 120° cos 270° + cos 120° sin 270°
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Question

Quizplus · Accepted Answer

This statement is true because it is an application of the sine addition formula: sin(A + B) = sinA cosB + cosA sinB, where A = 120° and B = 270°, resulting in sin(120° + 270°) = sin 390°.

Determine Whether the Statement Is True or False