Which expression is equivalent to cos(pi/12)cos(5pi/12)+sin(pi/12)sin (5pi/12)? a. cos(-pi/3)
b. sin(-pi/3)
c. cos(pi/2)
d. sin(pi/2)

F(x) = x2 − 9, and g(x) = x − 3 f(x) = x2 − 4x + 3, and g(x) = x − 3 f(x) = x2 + 4x − 5, and g(x) = x − 1 f(x) = x2 − 16, and g(x) = x − 4 h(x) = x + 5 arrowright h(x) = x + 3 arrowright h(x) = x + 4 arrowright h(x) = x − 1 arrowright

Asequence is defined recursively using the formula f(n + 1) =f(n) - 5. which sequence could be

I’m stuck on this equation, anyone got the answer?