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If DeltaABC is right triangle and if ang...

If `Delta`ABC is right triangle and if `angleA = (pi)/(2)`, then prove that
cos B - cos C = -1 + 2`sqrt(2) cos"" (B)/(2) sin"" (C )/(2)`.

Text Solution

Verified by Experts

The correct Answer is:
`-1 + 2 sqrt(2) cos"" (B)/(2) sin"" (C )/(2)`
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