SOLUTION: The sine of a 38-degree angle is some number r. Without using a calculator, you should be able to identify the angle size whose cosine is the same number r.

Question 1155231: The sine of a 38-degree angle is some number r. Without using a calculator, you should be able to identify the angle size whose cosine is the same number r.
Found 2 solutions by Alan3354, ikleyn:
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Not just should.
I can.
Answer by ikleyn(52781) (Show Source): You can put this solution on YOUR website!
.

The angle under the question is 90° - 38°.

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