Question

Trigonometry help please, do I use tan, sin, or cos??

Answer 1

Can anyone explain?

Answer 2

which ratio relates opposite side and hypotenuse ?

Answer 3

Opposite over hypotenuse would be sin

Answer 4

notice that QR is "OPPOSITE" side of angle P
and yes, so we use sine here :)
sin P = ... ?

Answer 5

Oh! So you start with what direction it is from the ANGLE.. from the angle, the side is opposite, and then you put that over the hypotenuse, is that correct?

Answer 6

bingo!

Answer 7

.7547 = x / 12.38

Answer 8

so, x = ... ?

Answer 9

Divide by .7547
x = 16.40?

Answer 10

7547 = x / 12.38
multiply both sides by 12.38 to isolate 'x' , what do u get ?

Answer 11

i meant 0.7547

Answer 12

9.34

Answer 13

yep! thats correct :)

Answer 14

Oh yeah, got the multiply/divide thing mixed up :p
Thank you! @hartnn

Answer 15

welcome ^_^