Algebra and Trigonometry page no 476 please help

Question

find the point on the unit circle that corresponds to the real number t. Use the result to evaluate sin t cos t and tan t.

Answer 1

Let us assume that, the real value , .

The point on the unit circle is .

Substitute the value in .

Substitute the values of in .

.

Therefore,

The value of  .

The value of  .

The value of  .