tentukan nilai perbandingan trigonometri 5 sin alpha = -2 (alpha di kuadran IV)

sin alfa = -2/5
di kuadran IV
sisi depan = 2
sisi miring = 5
sisi samping = akar 21

cos alfa = 1/5 akar 21
tan alfa = -2/21 akar 21
cot alfa = -1/2 akar 21
sec alfa = 5/21 akar 21
csc alfa = -5/2