What is the error in this problem

The error is the use of wrong trigonometric ratio formula.

Sine was used instead of tangent.

It should be:

Step-by-step explanation:

Side length, 36, is opposite to <A. Side length, 84, is the adjacent side. Therefore, the right trigonometric ratio formula to use is:

m<A ≈ 23°

The error made was the use of wrong trigonometric ratio formula.

hello from mrbilldoesmath!

answer:

x - 3

discussion:

x^2 - 9 = (x-3) (x+3)   so

(x^2-9)/ (x + 3) = x-3

you,

mrb

step-by-step explanation:

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