NEW! CBSE 2020 Sample Papers : Class-X, Class-XII
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If xcosθ – ysinθ = a, xsinθ + ycos θ = b, prove that x2+y2=a2+b2.
Prove that sec2θ+cosec2θ can never be less than
If A, B are acute angles and sinA= cosB, then find the value of A+B.
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