Problem

Solve this triangle.

Answer

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Answer

C=180∘−30∘−45∘=105∘

Steps

Step 1 ：cos⁡A=(3+3)2+(23)2−(6)22(3+3)(23)=32

Step 2 ：A=30∘

Step 3 ：cos⁡B=(3+3)2+(6)2−(23)22(3+3)(6)=12

Step 4 ：B=45∘

Step 5 ：C=180∘−30∘−45∘=105∘

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