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sudut PQ dengan TS = <(RS,TS) = <TSR= α
ΔTSR , TS = TR = 12, dan RS = 8
buat P tengah RS sehingga RP=PS= 1/2(8) = 4
TP = √(TS²-PS²)=√(12²-4²)= √128= 8√2
sin α = TP/TS = 8√2 / 12 = 2/3 √2
cos α = PS/TS = 4/12 = 1/3
tan α = TP/PS = 8√2 / 4 = 2√2