Question

Please I don’t understand this and I need help!

Answer 1

Answer:

Bro sorry but I am not able to see your image. Hope you understand me

Answer 2

tanA=5/12

$\\ \sf\longmapsto \dfrac{a}{b}=\dfrac{5}{12}$

$\\ \sf\longmapsto \dfrac{a}{2}=\dfrac{5}{12}$

$\\ \sf\longmapsto 12a=10$

$\\ \sf\longmapsto a=\dfrac{10}{12}$

$\\ \sf\longmapsto a=8.3$

$\\ \sf\longmapsto a\approx 8$

Now apply pythagorean triplet

$\\ \sf\longmapsto a^2+b^2=c^2$

$\\ \sf\longmapsto c^2=8^2+2^2$

$\\ \sf\longmapsto c^2=64+4$

$\\ \sf\longmapsto c^2=68$

$\\ \sf\longmapsto c=8.4$