sec θ. cot θ = cosec θ write true or false.
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If sin x = cos y; write the relation between x and y, if both the angles x and y are acute.
If sin x = cos y, then x + y = 45°; write true or false.
For any angle θ, state the value of :
sin2 θ + cos2 θ.
State for any acute angle θ whether :
sin θ increases or decreases as θ increases.