in tringle ABC if cosA=sinB-sinC, then prove that it is right angle tringle
in tringle ABC if cosA=sinB-sinC, then prove that it is right angle tringle
khalid , 10 Years ago
Grade 12th pass
Trigonometry> in tringle ABC if cosA=sinB-sinC, then pr...
1 AnswersRaghu Vamshi Hemadri
Use transformations n the RHS for twice you get CosC=0 so one of angle is 900.
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