Ineed with math. whats h/4 + 3 = -5 - h/4

Radii ok and nl are perpendicular to om because of the radius-tangent theorem. by definition of perpendicular, angles kom and lnm are right angles. this means that triangles kom and lnm are right triangles. angle lmn is common to both right triangles, so by the triangles kom and lnm are similar.

If tan2a=cot(a+60), find the value of a, where 2a is an acute angle

Which angle has the same measure as the dehedral angle formed by the orange face and the purple rectangle