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Kami adalah Panel Pakar Runding Matematik dan Matematik Tambahan Majlis Guru Cemerlang Malaysia. Di sini kami ingin berkongsi pengalaman dan bahan pengajaran untuk guru-guru seluruh Malaysia.Guru-guru dialualukan untuk menyumbang bahan melalui email kami : panelmmmt@gmail.com

Untuk Biodata Pn. Ding Hong Eng, sila rujuk ke
Ding’s Resource Centre

2 Responses

  1. how to do this question teacher..prove the identity cosec2A+cot2A=cotA

    • Prove cosec2A+cot2A=cotA
      L.H.S.=(1/sin2A)+cos2A/(sin2A )
      =(1/2sinAcosA)+cos2A/2sinAcosA
      =(1+cos2A)/(2sinAcosA)
      =(1+2〖cos〗^2 A-1)/2sinAcosA
      =(2〖cos〗^2 A)/2sinAcosA
      =cosA/sinA
      =cotA
      =R.H.S

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