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化简:(1)asin0°+bsin90°+ctan180°(2)mtan0+ncos1/2×π-psinπ-qcos3/2×π-rsin2π
题目详情
化简:(1)asin0°+bsin90°+ctan180° (2)mtan0+ncos1/2×π-psinπ-qcos3/2×π-rsin2π
▼优质解答
答案和解析
(1)
asin0°+bsin90°+ctan180°
=a*0+b+c*0
=b
(2)
mtan0+ncos1/2×π-psinπ-qcos3/2×π-rsin2π
=m*0+n*0-p*0-(-q)-r*0
=q
asin0°+bsin90°+ctan180°
=a*0+b+c*0
=b
(2)
mtan0+ncos1/2×π-psinπ-qcos3/2×π-rsin2π
=m*0+n*0-p*0-(-q)-r*0
=q
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