sin(x+π/3)+(tanπ/6)cos(x+π/3) 化简 sin(x+π/3)+(tanπ/6)cos(x+π/3) 化简
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sin(x+π/3)+(tanπ/6)cos(x+π/3)化简sin(x+π/3)+(tanπ/6)cos(x+π/3)化简sin(x+π/3)+(tanπ/6)cos(x+π/3)化简sin(x+π
sin(x+π/3)+(tanπ/6)cos(x+π/3) 化简 sin(x+π/3)+(tanπ/6)cos(x+π/3) 化简
sin(x+π/3)+(tanπ/6)cos(x+π/3) 化简
sin(x+π/3)+(tanπ/6)cos(x+π/3) 化简
sin(x+π/3)+(tanπ/6)cos(x+π/3) 化简 sin(x+π/3)+(tanπ/6)cos(x+π/3) 化简
sin(x+π/3)+(tanπ/6)cos(x+π/3)
=1/cosπ/6(sin(x+π/3)*cosπ/6 + cos(x+π/3) sinπ/6)
=2√3/3 *sin(x+π/3+π/6)=2√3sin(x+π/2)/3=2√3cosx/3
原式=2√3/3cosx
sin(x+π/3)+(tanπ/6)cos(x+π/3) 化简 sin(x+π/3)+(tanπ/6)cos(x+π/3) 化简
求证 tan(2π-X)sin(-2π-X)cos(6π-X)/ sin(X+3π/2)*cos(X+3π/2)=-tanX
1.求三角函数值:⑴sin(—(43π)/6)⑵cos(—(83π)/6) ⑶tan(—(41π)/3) ⑷cos((11π)/4) ⑸sin930° 2.化简: ⑴【Cos(x—π) tan(x—2π) tan(2π—x)】/【sin(π+x)】 ⑵((sin^2 )(—x))—tan(360°—x) *tan(—x)—sin(18
1.求三角函数值:⑴sin(—(43π)/6) ⑵cos(—(83π)/6)⑶tan(—(41π)/3)⑷cos((11π)/4)⑸sin930°2.化简:⑴【Cos(x—π) tan(x—2π) tan(2π—x)】/【sin(π+x)】⑵((sin^2 )(—x))—tan(360°—x) *tan(—x)—sin(180°
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1.化简:⑴【Cos(x—π) tan(x—2π) tan(2π—x)】/【sin(π+x)】⑵((sin^2 )(—x))—tan(360°—x) *tan(—x)—sin(180°—x) cos(360°—x) tan(180°+x)2.求三角函数值:⑴sin(—(43π)/6)⑵cos(—(83π)/6)⑶tan(—(41π)
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