kp_0325
同角三角函数关系
共 77 题,已做 0 题
题5: 22.(2023春•普陀区校级期中)若$\frac{\sin \alpha +\cos \alpha }{\sin \alpha -\cos \alpha }=
基础fill_compute
题18: 10.(2023春•青浦区校级期中)已知$\cos \alpha =\frac{1}{3}$,则$\sin (\alpha +\frac{3\pi }{2})=
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题24: 11.(2023春•运城期中)已知角$\theta$的终边上有一点$P(-4a$,$3a)(a>0)$,则$\sin 2\theta$的值是 ___$-\fra
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题32: 9.(2023•上海模拟)已知$P(-3,4)$为角$\alpha$终边上一点,则$\sin \alpha +\cos \alpha =$___$\frac{1
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题39: 11. (2023春•南通月考)已知角$\alpha$终边上有一点$(\sqrt{3},1)$,则$\frac{\sin (2\pi -\alpha )\tan
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题44: 25.(2023春•西城区校级期中)若$\tan \alpha =3$,则$\frac{\sin \alpha }{\sin \alpha +2\cos \al
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题54: 23.(2023•天元区校级开学)若角$\theta$的终边经过点$(-\frac{3}{5},\frac{4}{5})$,则$\sin (\frac{\pi
简单fill_compute
题71: 24. (2023春•海安市校级期中)设$f(x)=\frac{\cos x}{\cos (30\circ -x)}$,则$f(28\circ )+f(29\c
中等fill_compute