Question

Write article about adult eduction in your school magazin

Answer 1

Explanation:

From priority group arrangements we can see that carbon 1 has R, carbon 2 has S and carbon 3 has R configuration (opposite to what we get, as lowest priority group H is on horizontal line).

Answer 2

Answer:

If cosec theta + cot theta = k prove that cos theta = k2-1 / k2 + 1