Find the exact value under the given conditions.sin ? = 
, 0 < ? < 
; cos ? = 
, 0 < ? < 
Find cos (? + ?).
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Expand the expression.log6 xy
A. log3 x + log3 y B. log3 x - log3 y C. log6 x + log6 y D. log6 x - log6 y
Mathematics
Without graphing the function, determine its amplitude or period as requested.y = 3 sin 
xFind the amplitude.
A. 4?
B. 
C. 
D. 3
Mathematics
Simplify.9 ? 10 - 6 ? 5
A. 420 B. 2,700 C. 60 D. 180
Mathematics
Solve.If three times a number added to 2 is divided by the number plus 7, the result is four thirds. Find the number.
A. 
B. 2
C. 
D. - 3
Mathematics