:in a right triangle abc, tan(a) = 3/4. find sin(a) and cos(a). in a right triangle abc with angle a equal to 90 degrees, find angle b and c so that sin(b) = cos(b).

Tan is equal to sin over cosine so if this is all the info you are given sin.is 3 and cosine is 4. However it is possible term cancel out like sin could be 3/5 and cosine 4/5 which would still give tan 3/4. Actually that is probably what it is to make a 3 4 5 triangle.
To make sine and cos equal the opposite and adjacent sides must be equal. By corresponding angles it is isosceles so b and c must be 45

Just turn the whole gym into pie