Problem 76 of 7
Find exact sine, cosine, and tangent for 45 degrees using hypotenuse 2, each leg sqrt(2).
Hints
Using a hint is okay. It just tells the trainer to give you a little more review.
Hidden until you reveal it.
use special right triangle ratios.
Hidden until you reveal it.
Use exact values from a 45-45-90 triangle.
Enter your answer
No answer yet
Correct
Your answer is equivalent to the expected form.
Solution
Walkthrough
Walkthrough shown
Full solution stays hidden until you ask for it.
1. Use a 45-45-90 triangle.
2. Write sine, cosine, and tangent from side ratios.
3. Rationalize values involving 1/sqrt(2) if needed.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Decimal approximations when exact values are requested.