Cc Geometry H Hw 26 Worksheet With Answers Page 10

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13. A square has side lengths 7√2. Use sine or cosine to find the length of the
diagonal of the square. Confirm your answer using the Pythagorean Theorem.
7√2
7√2
14a) Make a prediction about how the sum sin 30 + cos 60 will relate to the
sum sin 60 + cos 30.
b) Use the sine and cosine values of special angles to find the sum: sin 30 + cos 60.
c) Find the exact value of the sum: sin 60 + cos 30.
d) Was your prediction correct ? Explain why or why not.

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