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Sine/Cosine/Important values/Exercise
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Show that the sine function and the cosine function have the following values.
a)
sin
π
4
=
cos
π
4
=
1
2
.
{\displaystyle {}\sin {\frac {\pi }{4}}=\cos {\frac {\pi }{4}}={\frac {1}{\sqrt {2}}}\,.}
b)
cos
π
3
=
1
2
.
{\displaystyle {}\cos {\frac {\pi }{3}}={\frac {1}{2}}\,.}
c)
sin
π
3
=
3
2
.
{\displaystyle {}\sin {\frac {\pi }{3}}={\frac {\sqrt {3}}{2}}\,.}
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