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Need help on solving problems with common tangents

Need help on solving problems with common tangents-example-1
User LostAvatar
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If WS is perpendicular, then its length will also be 42, and ZS would be 11 so, SY would be 8. Now use pythagorean theorem WY = sqrt ( 8^2 + 42^2) = sqrt ( 1828)

So, WY = 42.76

User Nikasv
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