Section 10.1-10.3 Board Practice. Pre-Calculus. Problem 1. Find the exact value. sin 255˚. Problem 2. Find the exact value given:. Problem 3. If for an acute angle , find:. Problem 4. Simplify the expression sin( x+y ) secx• secy. Problem 5. Find the exact value. tan 105˚.
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Section 10.1-10.3Board Practice
cos75 • cos 15 + sin75 •sin15