ABC siku-siku di a dengan AB = 24 cm dan BC = 25 cm maka nilai dari cos b

Here the answer. Thank you

siku2 di a
ab = tinggi = 24 cm
bc = miring = 25 cm
ac = alas = akar 25^2 - 24^2 = 7 cm

cos b = siku2 di b
cos b = samping/ miring
cos b = 24/25