I want a way to solve this question

Mathematics

1 answer:

noname [10]2 years ago

5 0

Answer:

Step-by-step explanation:

$cos~L=\frac{m^2+n^2-l^2}{2mn} \\=\frac{5^2+8^2-7^2}{2*5*8} \\=\frac{25+64-49}{80} \\=\frac{40}{80} \\=\frac{1}{2} \\=cos 60\\$

∠L=60°

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I want a way to solve this question​

I want a way to solve this question