Use a double-angle identity to find the exact value of the expression.1 - 2 sin2 67.5°
A. 
B. - 
C. 
D. - 
Answer: B
Mathematics
You might also like to view...
Solve the given equation by completing the square.13m2 + 3m = 0
A. 
B. 
C. 
D. 
Mathematics
Use synthetic division to find the quotient and the remainder.(2x3 + 3x2 + 4x - 10) ÷ (x + 1)
A. Q(x) = (2x2 + 5x + 9); R(x) = 1 B. Q(x) = (2x2 + x + 3); R(x) = 13 C. Q(x) = (2x2 + 5x + 9); R(x) = -1 D. Q(x) = (2x2 + x + 3); R(x) = -13
Mathematics
Perform the division and simplify.
Mathematics
Determine whether the equation is an identity, a conditional equation, or an inconsistent equation.5x + 5(2x - 7) = -17 - 3x
A. Identity B. Conditional equation C. Inconsistent equation
Mathematics