Simplify the expression by using a sum or difference identity.sin (83°) cos(17°) + sin(-7°) sin(-17°)
A. 0
B. 1
C. sin 100°
D. cos 100°
Answer: C
Mathematics
You might also like to view...
Solve the system of equations using the inverse of the coefficient matrix.2x + 8y + 6z = 204x + 2y - 2z = -23x - y + z = 11
A. x = -1, y = 2, z = 1 B. x = 2, y = 1, z = 6 C. No solution D. x = 2, y = -1, z = 4
Mathematics
Find a ? b.a = 
, b = 
A. -10
B. 
C. -38
D. 
Mathematics
Find the measures of the numbered angles in the rhombus PQRS.
Mathematics
Divide.
A. 
+ i
B. - 
- i
C. 
- i
D. - 
+ i
Mathematics