## anonymous one year ago If sinA = 2/3 then find cosA = ? with method please...

1. Nnesha

draw a triangle |dw:1438100119232:dw| $\large\rm sin \theta =\frac{ opposite }{ hypotenuse } ~~~ \cos \theta=\frac{ adjacent }{ hypotenuse } ~~\tan \theta =\frac{ opposite }{ adjacent }$

2. Nnesha

|dw:1438100173618:dw| apply Pythagorean theorem to find side of right triangle $\huge\rm a^2+b^2=c^2$

3. Nnesha

c is the longest leg of right triangle which is hypotenuse

4. anonymous

Thanks alott.. that was really helpfull

5. Nnesha

my pleasure