Question

100 Points! Algebra question. Photo attached. Find the exact value of the expression. Please show as much work as possible. Thank you!

Answer 1

For this problem, you need an on-hand calculator.

Problem:

sin (pi/8)

Step 1: divide pi by 8.

`\pi`/8

=0.39269908169

Step 2: Find Cosine of (0.39269908169)

This is the part where you need a calculator.

Locate the SIN button on your graphing calculator.

Press the SIN button, then continue to type 0.39269908169 after the parenthesis.

The calculator gives a value of .0068538383

Final answer:

0.068538383