sinA=5/6 0
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sinA=5/6 0
已知,5sina+2cosa=0,求sina*cosa
已知12sina+5cosa=0,求sina,cosa
sina=4/5(0
若sinA+sinA=tanA(0
(tana-3)(sina+cosa+3=0) 那么4sina-2cosa/5cosa+3sina 的值是多少(tana-3)(sina+cosa+3=0) 那么4sina-2cosa/5cosa+3sina的值是多少
sina+cosa=1/5,0
已知sina+cosa=1/5,0
设sinA+cosA=1/5,0
sina+cosa=1/5(0
sina+cosa=-1/5,0
知sina+cosa=1/5,0
已知sina+cosa=1/5,0
已知sina+cosa=-1/5,0
sina+cosa=-1/5,0
sina+cosa=1/5(0
sina+cosa=5分之一,且0
已知sina+cosa=1/5,0