Complete the sentence so the result is an identity. Let x be any real number.1 -    = sin2x

A. cot2x
B. tan2x
C. cos2x
D. sec2x


Answer: C

Mathematics

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Rewrite the polynomial in descending order.Rewrite a3 + 4a2b + 2b3 - 3ab2 in descending powers of b.

A. 2b3 + 3ab2 + 4a2b + a3 B. a3 + 4a2b - 3ab2 + 2b3  C. 2b3 + 4a2b - 3ab2 + a3 D. 2b3 - 3ab2 + 4a2b + a3

Mathematics

Use the method of writing each premise in symbols in order to arrive at a valid conclusion.It is either day or night.If it is daytime, then the squirrels are scurrying.It is not nighttime.Therefore, ...

A. The squirrels are not scurrying. B. Squirrels do not scurry at night. C. Squirrels do not scurry during the day. D. The squirrels are scurrying.

Mathematics

Subtract.13 - (-6)

A. 7 B. -7 C. 19 D. -19

Mathematics

Write the ratio in lowest terms.7 tons to 7 tons

A.  
B.  
C.
D.  

Mathematics