/sci/ - Science & Math

>tfw nobody on /sci/ has heard of lunar algae

>tfw tutoring engineering students in introductory calculus based physics
>most of the questions are about vectors
>try to explain what a vector space is
>"anon, but how do we add vectors"?

Another one is when they think that the projection onto the x-axis is always just the cosine, regardless of how the angle is defined.
I hate state school.

sci i dont fuckinf get this simple trig questio becausw im fucking retarded

"A tunnell is being dug through a hill. Ventilation shafts must be plaxed every 70 m from the entrance to the tunnel. on one side, the hill climbs steadily upward at an angle of 30 deg. The hill is steeper on the other side, which has a slope of 40 deg. The top of the hill is 300m high.

a) How many shafts must be drilled?

b) Special currogated metal pipes are used to line the shaft. These pipes come in 5 m sections. How many sections should the builder order?"

pls somebody draw a diagram in ms paint and explain