Seudónimo Seudónimo

22-02-2021
Mathematics

contestada

If cos(t) =
−
1
2
and tan(t) < 0, find sin(t) and cos(-t)

Respuesta :

Аноним Аноним

22-02-2021

Answer:

cos theta=-1/2

theta=cos-¹(-1/2)=120

tan theta=tan 120=-√3

sin theta=sin120=√3/2

cos(- theta)=cos theta=cos 120=-1/2

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