Mathematics Question and Solution

By Ogheneovo Daniel Ephivbotor
4th October, 2025

Calculating Length x.


a² = 2²+(2+1)²

a = √(13) units.

a is the each of the two adjacent lengths of the green isosceles right-angled triangle.


tanb = 3/2

b = atan(3/2)°


c = 45-atan(2/3)

c = 11.309932474°


2√(13)² = d²

d = √(26) units.


e² = √(26)²+2²-2*2√(26)cos11.309932474

e = 3.16227766017 units.


f = 90-atan(3/2)

f = 33.690067526°


g² = 1+√(13)²-2√(13)cos33.690067526

g = 2.82842712475 units.


h² = 2(1)²

h = √(2) units.


2.82842712475² = √(2)²+3.16227766017²-2*3.16227766017√(2)cosj

8.94427191cosj = 4

j = acos(0.4472135955)

j = 63.4349488229°


Therefore, calculating x.


sinj = x/√(2)


x = √(2)sin(63.4349488229)


x = 1.26491106407 units.

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