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Step-by-step explanation:
in an isoceles triangle both sides are equal.
take one of the half right angle triangle
by Pythagoras theorem
√45²=(3)²+(X/2)²
45=9+x²/4
45-36=x²/4
9*4=x²
X=6
option B
D. Multiply each rate by the range of each section.
NOTE: Do not multiply by the high amount, but rather the range of numbers within it.
By definition, supplementary angles are those whose sum is 180°
Therefore, ∠2 = 180 - ∠1
2x + 4 = 180 - 124
2x = 52
x = 26°