Year 11 Maths - Methods Circular functions

Exact Values Of Trigonometric Functions

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Questions

Question 1

19012

Find the exact value of \(\sin ( - 300^\circ )\)

Answer

\(\dfrac{{\sqrt 3 }}{2}\)

Worked Solution

\begin{aligned}
\sin \left(-300^{\circ}\right) &=-\sin \left(300^{\circ}\right) \\
&=-\sin \left(360^{\circ}-60^{\circ}\right) \\
&=+\sin 60^{\circ}\\
&=\frac{\sqrt{3}}{2}
\end{aligned}

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