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3. Algebraically solve the following equations: a. cos 20 + cost) = 0,270 S 6 3. Algebraically solve the following equations: a. b. cos20 +

3. Algebraically solve the following equations: a. cos 20 + cost) = 0,270 S 6

3. Algebraically solve the following equations: a. b. cos20 + coso = 0, 2700 0 < 1800 (2 marks) (Hint: There are 3 exact solutions for the given interval). csc2 0+ 2 cot 0 0 (Hint: Use a general statement to state all solutions in radians.) (2 marks)

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