karkiamiks02 karkiamiks02

11-12-2020
Mathematics

contestada

1. If A+B+C=180
prove that.
cosA/sinBsinC + cosB/sinCsinA + cosC/sinAsinB =2
HELP PLEASE

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Sueraiuka Sueraiuka

11-12-2020

Step-by-step explanation:

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