Simplify the expression.(1 + cot ?)(1 - cot ?) - csc2 ?
A. 0
B. 2 cot2 ?
C. 2
D. -2 cot2 ?
Answer: D
You might also like to view...
Find the area.
A. 56.10 m2 B. 21.2 m2 C. 10.6 m2 D. 28.05 m2
Find the coordinates of the vertex of the quadratic function.f(x) = (x + 1)2 + 1
A. (-1, 1) B. (0, 1) C. (1, 0) D. (-1, -1)
Write the sentence as a proportion.3 is to 11 as 21 is to 77.
A. 
= 
B. 
= 
C. 
= 
D. 
= 
Solve the problem.Assume that the price per unit d of a certain item to the consumer is given by the equation 
where x is the number of units in demand. The price per unit from the supplier is given by the equation 
where x is the number of units supplied. Find the equilibrium price and the equilibrium quantity.
A. equilibrium price: $35 per unit; equilibrium quantity: 50 units B. equilibrium price: $50 per unit; equilibrium quantity: 30 units C. equilibrium price: $20 per unit; equilibrium quantity: 50 units D. equilibrium price: $30 per unit; equilibrium quantity: 50 units