Question

if sin(u) = 2/3, cos (u) = -sqrt(5)/3 and tan (u) = -2/sqrt(5). what is u?

Answer 1

can you draw a picture first please

Answer 2

i dnt no that

Answer 3

@FibonacciChick666

Answer 4

ok cool(use your first pic) so now, let's see what we can do, I assume no calculators are allowed so that means we

Answer 5

the problem doesn't come with a picture so not sure if that was accurate

Answer 6

the triangle is enough, just to give you a nice representation

Answer 7

ok

Answer 8

what is the extremum

Answer 9

so, now, I'm guessing you just recently studied a law, any guess as to what Law I think we need to use here?

Answer 10

not sure

Answer 11

Are you familiar with the law of cosines?

Answer 12

yeah i learned it in high school

Answer 13

ok, did you just review it i your class?

Answer 14

but my professor hasn't mentioned it

Answer 15

hmm ok then, That is what I would use here, but if it hasn't been mentioned let's see if we can think of another way. What have you learned in class this week?