Use the addition formulas to derive the identity.sin 
= cos x
What will be an ideal response?
sin 
= sin x cos 
+ cos x sin 
= sin x (0) + cos x (1)
= 0 + cos x
= cos x
Mathematics
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Find the product.12x5(-4x5 - 6x2)
A. -48x10 + 72x7 B. -48x10 - 6x2 C. -48x2 - 72x D. -48x10 - 72x7
Mathematics
Divide in the indicated base.25006 ÷ 46
A. 4106 B. 4236 C. 3136 D. 4136
Mathematics
Solve the problem, using the table.
You buy a 2-year CD for $10,000 that earns 4% interest compounded daily. After the two years, you plan to use the compound amount to purchase a 10-year CD that earns 5% interest compounded daily. Find the final amount you will have after 12 years.
A. $17,859.69 B. $10,832.82 C. $27,319.47 D. $832.82
Mathematics
Use the vertical line test to determine whether the graph represents a function.
A. not a function B. function
Mathematics