Find the exact value of the expression.cos 
cos 
+ sin 
sin 
A. 1
B. 
C. 
D. 
Answer: C
You might also like to view...
Use a graphing calculator to find the sum.
Round your answer to three decimal places.
A. 0.917 B. 1.100 C. 0.091 D. 0.063
Solve the problem.The voltage v (in volts) induced in a tape head is given by 
where t is the time (in seconds). Find the average value of v over the interval from t = 0 to t = 3. Round to the nearest volt.
A. 16 volts B. 6502 volts C. 1100 volts D. 71,327 volts
Find the extreme values of the function subject to the given constraint.
A. Maximum: 1 at 
minimum: -1 at 
B. Maximum: 8 at 
minimum: -8 at 
C. Maximum: 9 at 
minimum: -9 at 
D. Maximum: 1 at 
minimum: -1 at 
Multiply or divide. Simplify, if possible. Assume all variables and radicands represent nonnegative real numbers.
(
+ x
)
A. 
+ x
B. x + 
C. 45x
D. 15 + x