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Trigonometric Identities (or maybe Trigonometric Equations)
Questions (1)
I'm done with this question..Can anyone help me?
tan^-1(yz/xr) + tan^-1(zx/yr) +tan^-1(xy/zr) = pi/4 Prove that x^2+ y^2+ z^2=r^2
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asked by
Suhail
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Parent Categories (1)
Trigonometry
