ත්‍රිකෝණමිතිය ගාණක්

poopoo

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  • Nov 18, 2021
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    මේක හදලා කවුරුහරි :eek:

    UGB2V2i.png
     

    acryan

    Well-known member
  • Oct 11, 2012
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    COTA = 1/ Tan A dala balanna enawa bung

    Okkoma Tan walata harawanna. mama me dan haduwa nikan mathakada balanna
     
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    lasankandy

    Well-known member
  • Jul 18, 2009
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    Plan: 1. We know that cot⁡(A)=1tan⁡(A) and tan⁡(A)=1cot⁡(A). We can use these identities to simplify the given equation. 2. After simplifying, we should be able to prove the given identity.

    Let's carry out the plan:

    Step 1: Substitute cot⁡(A)=1tan⁡(A) and tan⁡(A)=1cot⁡(A) in the given equation:

    1tan⁡(A)+tan⁡(B)1tan⁡(B)+tan⁡(A)=cot⁡(A)tan⁡(B)

    Step 2: Simplify the equation:

    1+tan⁡(A)tan⁡(B)1+tan⁡(A)tan⁡(B)=cot⁡(A)tan⁡(B)

    Step 3: The left side of the equation simplifies to 1:

    1=cot⁡(A)tan⁡(B)

    Step 4: Substitute cot⁡(A)=1tan⁡(A) in the equation:

    1=1tan⁡(A)tan⁡(B)

    Step 5: Simplify the equation:

    1=tan⁡(B)tan⁡(A)

    Step 6: Multiply both sides by tan⁡(A):

    tan⁡(A)=tan⁡(B)

    So, we have proved the given identity.

    \tan(A)=\tan(B)
     
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    kavindagk

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  • Dec 18, 2008
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    cot(A) + tan(B) => 1/tan(A) + tan(B) => [1+ tan(A)tan(B)]/tan(A) ------>(1)

    cot(B) + tan(A) => 1/tan(B) + tan(A) => [1+ tan(A)tan(B)]/tan(B) -------(2)


    (1)/(2) =----> [1+ tan(A)tan(B)]/tan(A) / [1+ tan(A)tan(B)]/tan(B)
    cancel both [1+ tan(A)tan(B)]

    --> 1/tan(A) / 1/tan(B)
    --> cot(A)/cot(B)
    ---> cot(A)tan(B) <- 1/cotB) => tan(B)
     

    dilann

    Well-known member
  • Jul 6, 2018
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    එකමත් එක රටක
    හරි සරලයි..

    දකුණු පැත්තේ තියන පදේ එලියට අදින්නේ ලවයෙන්..........

    LHS =>
    cotATanB ( 1/TanB + 1/CotA ) / ( CotB + TanA)
    = cotATanB


    හරය ලවය කැපිල එලියට ඇදපු එකා ඉතුරු වෙනවා.............
     
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