express all the trigonometric ratios in terms of cosecant
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sin x = √(1 – cos² x)
tan x = sin x/cos x = (√(1 – cos² x))/cos x
cot x = cos x/sin x = cos x/√(1 – cos² x)
sec x = 1/cos x
csc x = 1/sin x = 1/√(1 – cos² x)
tan x = sin x/cos x = (√(1 – cos² x))/cos x
cot x = cos x/sin x = cos x/√(1 – cos² x)
sec x = 1/cos x
csc x = 1/sin x = 1/√(1 – cos² x)
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