(1-tanx)(1-cotx)=2-secxcscx
1 answer:
I hope this helps you ✔sin^2x+cos^2x=1 ✔ 1-tgx=1-sinx/cosx=cosx-sinx/cosx ✔1-ctgx=1-cosx/sinx=sinx-cosx/sinx secx=1/cosx cosecx=1/sinx (cosx-sinx)(sinx-cosx)/sinx.cosx cosx.sinx-cos^2x-sin^2x+sinx.cosx/sinx.cosx 2.cosx.sinx-1/sinx.cosx 2.cosx.sinx/sinx.cosx-1/sinx.cosx 2-1/sinx.cosx 2-secx.cosecx
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