Solve each equation for 180 < x < 180. a. cosec 2 x = 4 b. sec

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Solve each equation for −180° < x < 180°.

a. cosec2 x = 4 

b. sec2 x = 9 

c. 9 cot2 1/2 x = 4

d. sec x = cos x 

e. cosec x = sec x 

f. 2 tan x = 3 cosec x

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