If two angles of a triangle are 29 and 105 then find the third angle in
degree.​

If two angles of a triangle are 29 and 105 then find the third angle in
degree.​

2 thoughts on “If two angles of a triangle are 29 and 105 then find the third angle in<br />degree.​”

  1. answer :

    third angle will b 45

    Step-by-step explanation:

    solution ——>

    Given

    let asume Δ ABC

    now

    we have;

    \begin{gathered} < a = 30 \\ \\ < b = 105 \\ \\ < c = \end{gathered}

    <a=30

    <b=105

    <c=

    As we all know sum of all angle of triangle =180

    so as per condition we write

    <a + < b + < c = 180

    \begin{gathered}30 + 105 + < c = 180 \\ \\ 135 + < c \: = 180 \\ \\ < c = 180 – 135 \\ \\ < c = 45\end{gathered}

    30+105+<c=180

    135+<c=180

    <c=180−135

    <c=45

    so third angle will b 45

  2. We know that the sum of the interior angles of a triangle is 180∘. Let third angle in all the given triangles be x∘. Therefore,

    (i) 38∘+100∘+x∘=180∘

        x∘=180∘−138∘

        x∘=42∘

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