# Trigonometry sin cot CAST

(b) Solve the following, ????????^2?=1, express your solution in degrees in the range ?180°???180°, and in radians in the range 0°???2?rad.

If someone could do these and show working out that would be great!

note from me (the cot is squared it just does not show the cot to the power of 2 very well)

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