Find the general expression for all angles whose sine is zero.
Find the general solution or the general expression for all angles, whose cosine is zero.
Find the general expression for all the angles whose cotangent is zero.
Find general value of x, when cos x = cos y
To find general value of x when tanx = tany
Short Answer Type
1 - cos2x = 1 - cos2y
where 
where 
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