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31 votes
31 votes
Trigonometry that’s due in one hour :(

Trigonometry that’s due in one hour :(-example-1
User IgnisFatuus
by
3.1k points

1 Answer

17 votes
17 votes

Answer:

(a)
\theta=\tan^(-1)(-0.890)


\implies \theta=-41.66908262 \pm 180 \textdegree n


\implies \theta=138.3309174..., 318.3309174...


\implies \theta=138\textdegree, 318\textdegree

(b)
\theta=\cos^(-1)\left((√(3) )/(2)\right)


\implies \theta=30 \textdegree \pm360 \textdegree n, 330 \textdegree \pm360 \textdegree n


\implies \theta=30 \textdegree , 330 \textdegree

(c)
\theta=\sin^(-1)\left((1 )/(2)\right)


\implies \theta=30 \textdegree \pm360 \textdegree n, 150 \textdegree \pm360 \textdegree n


\implies \theta=30 \textdegree , 150 \textdegree

User Sejal
by
2.9k points
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