Complete the sentence so the result is an identity. Let x be any real number.1 - = sin2x
A. sec2x
B. cos2x
C. tan2x
D. cot2x
Answer: B
Mathematics
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Simplify the expression.
A. sin2x B. cos2x C. cot x csc x D. tan x sec x
Mathematics
Solve.xy - y2 = -2416xy - 10y2 = 0
A. 
, 
B. 
, 
C. 
, 
D. 
, 
Mathematics
Write a word name for the number in the sentence.The weight of a full grown Great Pyrenees dog named Simba is 152.86 pounds.
A. One hundred fifty-two and eighty-six thousandths B. One hundred fifty and two hundred eighty-six thousandths C. One thousand fifty-two and eighty-six tenths D. One hundred fifty-two and eighty-six hundredths
Mathematics
Find the value of the combination.C(7, 7)
A. 1,260 B. 1 C. 0.5 D. 5,040
Mathematics