If k ∈ A ∩ B, which is the most specific location of k on the Venn diagram? I II III IV

Arley is building a model of a city map. in one part of the city, three roads form a right triangle, which harley draws as triangle abc, with the following measures: m∠b=90° and m∠a=30°. in his scale model, the hypotenuse of triangle abc, ac¯¯¯¯¯¯¯¯, has a length of 817−−√ cm. what is the value of a (the length of bc¯¯¯¯¯¯¯¯)?

The owner of the plant nursery where you were tells you to fill 350 ml bottles from a 30 l from a fertilizer

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