Question

2)

People who don't have any land for growing a garden often have very small gardens(a)_______
their window-boxes. A window-box should be strongly built, and must
(b)________ firmly supported, for it can be very heavy when filled (c)__________
soil. It should (d)__________
good water drainage and be filled with finely ground soil
mixed with plant food. The direction (e)__________
the window faces is important. Some
plants like the sun; (f)_______
prefer shade. A terrarium is a glass-sided container for
growing plants and keeping small creatures. The container must have a cover to conserve
moisture and humidity.​

Answer 1

Explanation:

We have 2tan-1(1/3) + tan-1(1/7) = π/4

Answer 2

Answer:

I do not know this answer at all very sorry