GeometryWhich pair of angles has congruent values for the sin x° and the cos y°?
9 months ago
Which pair of angles has congruent values for the sin x° and the cos y°?
a. 35°; 55°
b. 35°; 145°
c. 35°; 70°
d. 35°; 35°
1 Answers
Best Answer
denleab Staff answered 9 months ago
Step 1 Note: cos (90 θ) = cos(90) cos θ + sin (90) cdot sin θ = 0 * cos θ + 1 sin θ cos (90 θ) = sin θ Step 2 Using, it θ=35, then cos (90-35) = sin (35) cos (55) = sin (35) 35°, 55° option a is correct.
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