If cos(theta)=dfrac513\\cos(\\theta) = \\dfrac{5}{13}cos(theta)=dfrac513, what is sin(theta)\\sin(\\theta)sin(theta) for theta\\thetatheta in the first quadrant?
dfrac1312\\dfrac{13}{12}dfrac1312
dfrac135\\dfrac{13}{5}dfrac135
dfrac512\\dfrac{5}{12}dfrac512
dfrac1213\\dfrac{12}{13}dfrac1213