Answer:
1.63
HOPE THIS WILL HELP..............!
The tangent half angle formula, one of several, is

We have θ is opposite 4 in the 3/4/5 right triangle so



Answer: 1/2
This is actually pretty deep. It says half the big acute angle in the 3/4/5 triangle is the small diagonal angle of the 1x2 rectangle. Similarly, the small acute angle in 3/4/5 triangle is twice the small diagonal angle of the 1x3 rectangle.
The function is increasing on the intervals
x ∈ (-∞, -1) ∪ (1, ∞)
Answer:
1/2(bh)
A=20
Step-by-step explanation: