2 Answers

Victor Zamanian · Answer 1 · 2021-09-17T18:22:01+0000

Please consider the complete table.

We have been given a table. We are asked to complete the given table.

We know that point
(x,y) represents
$(\text{cos},\text{sin})$ on unit circle.

We know that value of y is 0 on x-axis, so value of sine on x-axis would be 0.

We also know that value of x is 0 on y-axis, so value of cosine on y-axis would be 0.

The value of
$\text{cos}(0)=1$ and
$\text{sin}(0)=0$ .

$\text{cos}(\right(\pi)/(2)\left)=0$ and
$\text{sin}(\right(\pi)/(2)\left)=1$ .

$\text{cos}(\pi)=-1$ and
$\text{sin}(\pi)=0$ .

$\text{cos}(\right(3\pi)/(2)\left)=0$ and
$\text{sin}(\right(3\pi)/(2)\left)=-1$ .

Therefore, the complete table will be as attached in the file.

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