Consider three vectors:

A= 4 i - 9 j + 6 k

B= -1 i + 2 j

C =(6cos60) i + (6sin60) j

Evaluate the magnitude of the quantityA+ (BxC)

I cannot have a graphing calculator on the test (only a scientific one), so matrices are not possible.

I tried taking the dot product ofBandCand got about 53.65. But then finding the quadrature of the x components, y components, and z components throws me off.

Help?