Why are soldering guns considered undesirable for assembly work? A. They're too heavy.

B. They take time to heat up.

C. They're too large.

C. The tips aren't as precise as those available for soldering irons,

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west

the answer is 100. i just did this lesson and got a 100% on it. : )

-fishtank