Question

Find the Sine, cosine, tangent of - 120

Answer 1

Find the Sine, cosine, tangent of - 120​

`\sin (-120)`
`\begin{gathered} \mathrm{Use\: the\: following\: property\colon}\: \sin \mleft(-x\mright)=-\sin \mleft(x\mright) \\ \sin \mleft(-120^(\circ\: )\mright)=-\sin \mleft(120^(\circ\: )\mright) \\ =-\sin \mleft(120^(\circ\: )\mright) \\ =-(√(3))/(2) \end{gathered}`
`\cos (-120)`