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Hitman42 [59]
2 years ago
9

Trigonometry that’s due in one hour :(

Mathematics
1 answer:
expeople1 [14]2 years ago
3 0

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(\dfrac{\sqrt{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(\dfrac{1 }{2}\right)

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

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

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