what is cos of 16

You can use the calculator here.

 

$$\underset{\,\,\,\,^{\textcolor[rgb]{0.66,0.66,0.66}{360^\circ}}}{{cos}}{\left({\mathtt{16}}^\circ\right)} = {\mathtt{0.961\: \!261\: \!695\: \!938}}$$

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