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

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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∘

   Reply