Examine the following expressions: Number 1: sin(105 degrees) Number 2: cos(105 degrees) Number 3: tan(255 degrees) a. Write the exact value. Show all of your work. b. Explain any similiatries you see among your answers.  c. Which do you think is better: knowing the exact value, or writing in decimal form? Give reasons for your argument. Does your choice have any weaknesses? Explain.

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