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Trigonometry – II — Maths STD 11 Science — Question

Maharashtra BoardEnglish MediumSTD 11 ScienceMathsTrigonometry – II2 Marks
Question
Find the values of : cos 600°
✓

Answer

$
\begin{aligned}
& \cos 600^{\circ}=\cos \left(360^{\circ}+240^{\circ}\right) \\
& =\cos 240^{\circ} \\
& =\cos \left(180^{\circ}+60^{\circ}\right) \\
& =-\cos 60^{\circ} \\
& =-\frac{1}{2}
\end{aligned}
$

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