In which system of government does the central or national government have the most power? In which system does it have the least?

A unitary system

Explanation:

A unitary system has the highest degree of centralisation. In a unitary state, the central government holds all the power. Lower-level governments, if they exist at all, do nothing but implement the policies of the national government.

angle a = 40.6°

step-by-step explanation:

for any right angle triangle we know the pythagoras theorem reveals

hypotenuse² = height²+base²

by this formula we will calculate the length of hypotenuse

h² = 6²+7²

⇒ h =√36+49 = √85 = 9.22

now from the given triangle sin a = height/ hypotenuse

                                                sin a = 6/9.22 = 0.651

therefore

so angle a = 40.6°

it the big letter b heart my answer