Express the sum or difference as a product of sines and/or cosines.sin (6?) - sin (4?)

A. -2 sin (5?) cos ?
B. -2 sin ? cos (5?)
C. 2 sin (5?) cos ?
D. 2 sin ? cos (5?)


Answer: D

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On June 1,2016, Molser Company acquired a new machine by agreeing to pay five equal annual payments of $20,000, with the first payment due that day. Assuming an interest rate of 14% compounded annually, Molser should record the acquisition cost of the machine as 

A. $68,662. B. $78,274. C. $87,719. D. $100,000.

Solve the problem. Refer to the table if necessary.Kelly and Kurt are married filing jointly with a taxable income of $83,634. Calculate the amount of tax owed.

A. $20,909 B. $12,809 C. $9184 D. $12,386

Complete the identity.sec4 ? - 2 sec2 ? tan2 ? + tan4 ? = ?

A. sec2 ? + tan2 ? B. 2 C. sec2 ? (1 + tan2 ?) D. 1

Establish the identity. = cos x + cot x

What will be an ideal response?