Problem 105 of 7
Use cofunction relationship in right-triangle context One acute angle in a right triangle is 72 degrees.
Using a hint is okay. It just tells the trainer to give you a little more review.
Hidden until you reveal it.
choose alternate angle to simplify side relationship.
Hidden until you reveal it.
Context must involve complementary acute angles in a right triangle.
Enter your answer
Your answer is equivalent to the expected form.
Walkthrough
Full solution stays hidden until you ask for it.
1. Identify the two acute angles in the right triangle.
2. Verify they sum to 90 degrees.
3. Apply sine-cosine cofunction relationship.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Using cofunction relationship with noncomplementary angles.