Find the exact value of the expression. Do not use a calculator.3 cot2 45° + 8 sin2 30°
A. ?
B. 3
C. 7
D. 5
Answer: D
Mathematics
You might also like to view...
The graphs show the position s, velocity v = ds/dt, and acceleration a = d2s/dt2 of a body moving along a coordinate line as functions of time t. Which graph is which?
A. B = position, A = velocity, C = acceleration B. C = position, A = velocity, B = acceleration C. A = position, C = velocity, B = acceleration D. A = position, B = velocity, C = acceleration
Mathematics
Simplify the rational expression.
A. - 
B. - 
C. - 
D. 
Mathematics
Fill in the blank.A gallon has _________ a liter.
A. less capacity than B. greater capacity than C. the same capacity as
Mathematics
Use the information given about the angle ? to find the exact value of the indicated trigonometric function.csc ? = -
, cos ? > 0Find sin 
.
A. 
B. 
C. 
D. -
Mathematics