Question

Помогите решить плиз!!!

Answer 1

sin$alpha$=$frac{24}{25}$
Cos$alpha$=$sqrt{1- sin^{2} alpha }$=$sqrt{1- ( frac{24}{25}) ^{2} } = sqrt{1- frac{576}{625} }= sqrt{ frac{625-576}{625} } = frac{7}{25}$