Posted by **Sam** on Wednesday, March 23, 2011 at 5:40pm.

I'm not sure how to solve these with calculator.

sec x = -2 , π ≤ x ≤ 3π

sinθ=0.1473, 0°≤θ≤90°

cosθ=0.7563, 0°≤θ≤90°

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