Solve the equation: cos–1 a/x–cos–1 b/x =cos–1 1/b - cos-1 1/a
Given:- 
Take
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We know that, Formula
Thus,
⇒ 
⇒ 
⇒ 
Squaring both side or removing square root, we get
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⇒ 
⇒ 
⇒ (b2 – a2)a2b2 = x2(b2 – a2)
⇒ x2 = a2b2
⇒ x = ab
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