Find the sine, cosine & tangent of acute angle A of triangle.

Question

anonymous · Answer

|dw:1431812447856:dw|

anonymous · Answer

I think I got sin A = a/c or 7/25 = .28

nnesha · Answer

given: 2 sides 
apply Pythagorean theorem to find 3rd side

nnesha · Answer

nope sin = opposite over hyp
not adjacent

nnesha · Answer

$$\rm sin \rm \theta = \frac{ opposite  }{ hypotenuse  }~~~~ \cos \theta = \frac{ adjacent  }{ hypotenuse } ~~\tan \theta = \frac{ opposite }{ adjacent  }$$

anonymous · Answer

forgot to write the BC is 7 on the picture

nnesha · Answer

ohh alright |dw:1431812616422:dw|
so sin A = ?

anonymous · Answer

yes that pic is right now

anonymous · Answer

since you know the 90 degree angle wouldn't SIN A= 7/25?

nnesha · Answer

okay sin A= opposite over hyp |dw:1431812695421:dw|

nnesha · Answer

yes right sin A = 7 over 25

anonymous · Answer

great so I got SIN A - 7/25 and then take the sin-1 .28 = 16 degrees?

nnesha · Answer

is there a box in original diagram ?

nnesha · Answer

|dw:1431812909014:dw|
this one