Question

Can someone please help me

Answer 1

The trigonometric values are:

$cos(\frac{3\pi}{4})=\frac{1}{\sqrt{2} } \\\\sin(\frac{3\pi}{4})=\frac{1}{\sqrt{2} }$

Values of trigonometric identities:

The given trigonometric identities are:

$cos(\frac{3\pi}{4} )\\\\sin(\frac{3\pi}{4})$

Note that:

$\pi=180^o\\\\\frac{3\pi}{4}=135^0$

Therefore, using the calculator for the given expressions:

$cos(\frac{3\pi}{4})=cos135^0=\frac{1}{\sqrt{2} } \\\\sin(\frac{3\pi}{4})=sin135^0=\frac{1}{\sqrt{2} }$

Learn more on exact values of trigonometric expressions here: brainly.com/question/11907145

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