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Cos 80 o = 0.17. 3. Use a scientific calculator to find the following values. (Web 2.0 Calc) Sin 80 o = 0.9. Cos 45o = 0.7. Tan 77o = 4.3. 4. Open the Trig Functions. activity. Use the interactive to answer the following questions. How does the value of sinA change as increases and decreases? sinA increases while angle a decreases. ................
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