Question-155692

Question Number 155692 by cortano last updated on 03/Oct/21

Commented by cortano last updated on 03/Oct/21

why a^{2} = x (2 x) ?

Commented by amin96 last updated on 03/Oct/21

Commented by amin96 last updated on 03/Oct/21

a^{2} = x (x + x) = 2 x^{2} \Rightarrow a = x \sqrt{2}

{(3 x)}^{2} - a^{2} = b^{2} \Rightarrow b^{2} = 7 x^{2} b = x \sqrt{7}

\cot (Ψ) = \frac{b}{a} = \frac{x \sqrt{7}}{x \sqrt{2}} = \sqrt{3, 5}

Commented by amin96 last updated on 03/Oct/21

Commented by cortano last updated on 04/Oct/21

thank you

Answered by Tawa11 last updated on 03/Oct/21

nice sir

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