Jika cotan a = 3 tentukan sin =(π/2 -a)
Matematika
Darrenpaulus
Pertanyaan
Jika cotan a = 3 tentukan sin =(π/2 -a)
1 Jawaban
-
1. Jawaban dharmawan14
cotan a = 3
cotan a = x/y
maka a = 3/1
x = 3 dan y = 1
r = V(3^2 + 1^2)
r = V(9 + 1)
r = V10
cos a = x/r
= 3/V10
= (3/10)V10
sin (phi/2 - a) = cos a
= (3/10)V10