Find the exact value under the given conditions.cos ? = - 
, 
< ? < ?; sin ? = - 
, ? < ? < 
Find cos (? + ?).
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Find 
.y = (cos x)
A. (cos x)
ln (
)
B. -(cos x)
-1 sin x
C. 
(cos x)
-1
D. -
(cos x)
-1 sin x
Mathematics
Find the product.-9ax6(9ax7 - 6x3 - 10)
A. -81ax7 + 54x3 + 90 B. -81a2x13 + 54ax9 C. -81a2x13 - 6x3 - 10 D. -81a2x13 + 54ax9 + 90ax6
Mathematics
Evaluate the geometric series or state that it diverges.
A. 
B. 
C. 
D. 
Mathematics
Solve the problem. Round to the nearest tenth of a percent unless otherwise noted. All 35 of the students in a mathematics class attended class on Monday. On Tuesday only 29 students attended. What was the percent decrease?
A. 82.9% B. 79.3% C. 17.1% D. 20.7%
Mathematics