Suppose cos(O) = 12/13, Quadrant I. Find sin(O).
A:13/12
B:5/13
C:13/5
D:5/12
1 answer:
Answer:
B: 5/13
Step-by-step explanation:
pythagoras theorem: a^2 + b^2 (sides) = c^2 (hypotenuse)
a^2 + 12^2 = 13^2
a^2 + 144 = 169
a^2 = 25
a = 5
sin = opp/hyp
sin 5/13
Hope this helps
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