Answer:
a=18.5
Step-by-step explanation:
the value of c angle is 35°
according to the question
[tex] \frac{a}{ \sin( {45}^{o} ) } = \frac{15}{ \sin(35°) } [/tex]
[tex]a = \frac{15 \times \frac{ \sqrt{2} }{2} }{ \sin({35}^{o} )} [/tex]
[tex]a= 18.5[/tex]
