The angles of a triangle are 99??, 3x??, and x + 5??.

1 answer:

3 0

Since we know a triangle only has 180 degrees we can say:

99+3x+x+5=180

Then we can solve for x:

4x+104=180
4x=76

x=19

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$\qquad\qquad\huge\underline{{\sf Answer}}$

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$\qquad \sf \dashrightarrow \: \bigg( \dfrac{1}{ \sqrt{7 + \sqrt{5} } } + \sqrt{7 + \sqrt{5} } \bigg) {}^{2}$

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