Find one trig ratio from another
Draw the right triangle, then pick the sign from the quadrant.
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cos θ = 4/5 and θ is acute. What is sin θ? Write a fraction in lowest terms.
Answer: 3/5
cos θ = 35/37 and θ is acute. What is sin θ? Write a fraction in lowest terms.
Answer: 12/37
cos θ = 63/65 and θ is acute. What is sin θ? Write a fraction in lowest terms.
Answer: 16/65
Tip: Draw the right triangle, then pick the sign from the quadrant.
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