Question

Mohon bantuannya kak....

Answer 1

Segitiga PQR
siku-siku di Q → PR = sisi miring
depan sudut P = QR
samping sudut P = PQ

PQ = 5 cm
PR + QR = 25 cm
PR = 25 - QR

pakai cara pythagoras :
PR^2 = PQ^2 + QR^2
(25 - QR)^2 = 5^2 + QR^2
625 - 50QR + QR^2 = 25 + QR^2 (QR^2 habis)
625 - 50QR = 25
-50QR = 25 - 625
-50QR = -600
QR = -600/-50 = 12 cm

PR = 25 - QR
= 25 - 12 = 13 cm

sin P = depan/miring = QR/PR = 12/13
cos P = samping/miring = PQ/PR = 5/13
tan P = depan/samping = QR/PQ = 12/5

maaf kalau salah
semoga membantu

^ = pangkat