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OpenStudy (anonymous):
Which pair of angles has congruent values for the sin x° and the cos y°? 70°; 160° 70°; 70 70°; 120° 70°; 20°
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OpenStudy (dayakar):
sin 70 = sin (90-20) = cos 20 70,20
OpenStudy (anonymous):
thank you
OpenStudy (dayakar):
:)
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