Suggested: cos pi/12 - cos^(-1)(3)/(5)+cos^(-1)(12)/(13)+cos^(-1)(63)/(65)=(pi)/(2) - value of cos pi by 12 - sin^(-1)((12)/(13))+cos^(-1)((4)/(5))+tan^(-1)((63)/(16))=pi - सिद्ध करें कि cos^(-1)(3)/(5)+cos^(-1)(12)/(13)+cos^(-1)(63)/(65)=(pi)/(2) - दर्शाइए कि sin^(-1)(12)/(13)+cos^(-1)(4)/(5)+tan^(-1)(63)/(16)=pi - (ii) cos^(-1)(3)/(5)+cos^(-1)(12)/(13)+cos^(-1)(63)/(65)=(pi)/(2) - cos pi sur 12 - cos pi 12 Browse related:
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