Problem 61 of 7
Find the missing acute angle using inverse cosine from adjacent 6, hypotenuse 12.
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use ratio and inverse trig.
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Use inverse cosine with adjacent over hypotenuse; ratio must be between 0 and 1 for acute right-triangle angles.
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Your answer is equivalent to the expected form.
Walkthrough
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1. Identify adjacent side and hypotenuse relative to the unknown angle.
2. Write cos(theta)=adjacent/hypotenuse.
3. Apply inverse cosine to find theta.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Using opposite side with cosine.