Prove- x 2 x - 2 x 3 x - 3 x x - 1

(A + B) = A . B 1 A + B (3x) = (2x + x) = 2x . x 1 (2x) + (x) (3x) (2x) + (3x) (x) = 2x. x 1 ∴ (x) (2x) (2x) (3x) ...

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Sin(A+B)Sin(A-B)

Prove: x 2 x...

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Prove:
$cot x cot 2 x - cot 2 x cot 3 x - cot 3 x cot x = 1$

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Prove that cot x cot 2x – cot 2x cot 3x – cot 3x cot x = 1

cot x cot 2x – cot 2x cot 3x – cot 3x cot x = 1

Prove the following:
cot x cot 2x - cot 2x cot 3x - cot 3x cot x = 1

3 {cos}^{- 1} x = {cos}^{- 1} (4 x^{3} - 3 x) x \in [1 / 2, 1]

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