We are given that
In right triangle ABC, if angle A is 90 degrees, angle C is 34 degrees, and AC is 71.4, find BC.
Solution
We will first draw a diagram to illustrate the information
Above we want to find x
The method to use is SOHCAH
From the right angle triangle above we have above, we have the adjacent side and we want to find the hypotenus, so we use cosine
i.e

We need to solve for x here

Thus, |BC| = 86.1 (to the nearest tenth
Answer:
aₙ = aₙ₋₁ + n + 1
Step-by-step explanation:
a₁ = 2
a₂ = 2 + 2 + 1 = 5
a₃ = 5 + 3 + 1 = 9
a₄ = 9 + 4 + 1 = 14
a₅ = 14 + 5 + 1 = 20
P=2(l+w) = 9696
-> l+w= 9696/2= 4848
l=6+2w
6+2w+w=4848
6+3w=4848
3w=4842
w=1614
l=6+2w = 6+2x1614= 3234
The sum of the 3 angles in a triangle is 180 , from the name you can know that it will have 3 equal angles which will be 60 degrees each as 180÷3=60