Answer by JKismyhusbandbae: 12
Solve the equation for a
Work: (listed in picture)
Answer:

Step-by-step explanation:



Reducing 3 from numerator and denominator,

If arctan 4/3 = the tangent of that angle will be 4/3 , opposite 4 over adjacent 3
Now, you only have to take the sin of that angle it's opposite 4 over hypotenuse 5.
You will get that the answer is 4/5
hope this helps
1/4 of 2,500 i hope you get it right