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133.If A+B+C= Pi, cotx = cotA + cotB + cotC. Then prove that sin (x-A) sin (x-B) sin (x-C) = sin(cube) |
| Answer» 133.If A+B+C= Pi, cotx = cotA + cotB + cotC. Then prove that sin (x-A) sin (x-B) sin (x-C) = sin(cube) | |