Jawaban:
cos A = x/r = 2/3. x=2 dan r= 3
y²= r²-x²=(3)²-(2)²=9-4=5
y=√5
tan A = y/x = √5 / 2= 1/2 √5. (D)
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Jawaban:
cos A = x/r = 2/3. x=2 dan r= 3
y²= r²-x²=(3)²-(2)²=9-4=5
y=√5
tan A = y/x = √5 / 2= 1/2 √5. (D)