Question

how do you determine the value of cos for A?
and sin for B and tan for A & B? I am extremely confused using this scientific calculator.

Answer 1

what model do you have?

Answer 2

TI-36X

Answer 3

OK I was looking at the manual (I assume you have a copy)
what do you get if you press tan 45 enter?

Answer 4

1

Answer 5

that means you are in degree mode and you found the tangent of 45 degrees is 1
try sin 30 enter (you should get 0.5)

Answer 6

yes

Answer 7

now to find the inverse sin of 0.5 clear it, and press
sin sin (the sin button twice in a row) then 0.5 enter

Answer 8

0.000152307

Answer 9

oops, that is not what I expected. you did sin(sin(0.5)))
I wanted to see sin^-1(0.5)