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Question Number 185637 by Mingma last updated on 24/Jan/23

Answered by HeferH last updated on 24/Jan/23

(a/b) = ((1 + (√5))/2) ((a + b)/(sin (18°+x))) = (a/(sin 18°)) 1 + (b/a) = ((sin (18° + x))/(sin 18°)) 1 + (2/(1 + (√5))) = ((sin (18° + x))/(sin 18°)) sin^(−1) [(1 + (2/(1 + (√5))))sin 18°] − 18° = x x = 12°

ab=1+52a+bsin(18°+x)=asin18°1+ba=sin(18°+x)sin18°1+21+5=sin(18°+x)sin18°sin−1[(1+21+5)sin18°]−18°=xx=12°

Commented by HeferH last updated on 24/Jan/23

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