Jawabanmu

2014-02-09T09:06:05+07:00
PR = √4²+8² = 4√5

P
|\
|  \
|    \
|       \
 ---------        
Q        R


Sin P = QR/PR = 8/4√5 = 2/5 √5
Cos P = PQ/PR = 4/4√5 = 1/5 √5
Tan P = QR/PQ = 8/4 = 2

Sin R =PQ/PR = 4/4√5 = 1/5 √5
Cos R = QR/PR = 8/4√5 = 2/5 √5
Tan R = PQ/QR = 4/8 = 1/2
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