Question

Trigonometric functions Help!
I'm lost here...

Answer 1

Well you are given two lengths, why not use tanA?

Answer 2

TanA=4/5

Answer 3

because that's not on the multiple choice, or is it? I seriously do not understand these principles...

Answer 4

reason being because the problem is not finished
\[tanA=4/5\]
\[\tan^{-1} (tanA)=\tan^{-1} (4/5)\]
\[A=\tan^{-1} 4/5\]
Plug that into a calculator and that should give you your answer

Answer 5

ok so this one is tan^(-1) 5/7, right?

Answer 6

correct

Answer 7

ok so they switched this one up on me. so would it be tan^(-1) 5/4?

Answer 8

Correct again

Answer 9

YES!!! *happy dance* thank you so much. You have no idea how long i have been trying to figure these things out. *e-hug*

Answer 10

ha, you're welcome ^_^'

Answer 11

So what about this one?

Answer 12

Use sin

Answer 13

Thanks! I worked that one out, do you know how to do these? I'm stuck on this one.

Answer 14

it's a sinx graph:
2sin(x+.5Pi)+1

Answer 15

ok, what about this one?