问题标题：
findeachvaluebyreferringtothegraphsofthetrigonometricfunction.1.sin(-720度)2.cos(540度)3csc(720度)findthevaluesof&forwhicheachequationistrue.1.sin&=-12.tan&=0statetheamplitude,period,andphaseshiftforeachfunction.
问题描述：
findeachvaluebyreferringtothegraphsofthetrigonometricfunction.
1.sin(-720度)2.cos(540度)3csc(720度)
findthevaluesof&forwhicheachequationistrue.
1.sin&=-12.tan&=0
statetheamplitude,period,andphaseshiftforeachfunction.
1.Y=-2sin&2.Y=-3sin4&3.Y=2.5cos(&+180度)
writeanequationofthesinefunctionwitheachamplitude,period,andphaseshit.
1.amplitude=0.75,period=360度,phaseshift=30度
writeanequationofthecosinefunctionwitheachamplitude,period,andphaseshift.
1.amplitude=3.75,period=90度,phaseshift=4度.
康为民回答：
findeachvaluebyreferringtothegraphsofthetrigonometricfunction.根据(三角)函数图像,找到下列三角函数的值1、sin(720°)=sin(0°+2*360°)=sin0°=02、cos(540°)=cos(180°+360°)=cos180°...
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