A 25-foot-long footbridge has two diagonal supports that meet in the center of the bridge. Each support makes a 65∘ angle with a
short vertical support.
What is the length x of a diagonal support, to the nearest tenth of a foot?
x≈_____ feet
What is the length x of a diagonal support, to the nearest tenth of a foot?
x≈_____ feet
1 answer:
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Answer:
<em>{ - 2 , 8 } </em>
Step-by-step explanation:
( x² - 6x ) = 2
4² = ( x² - 6x )
x² - 6x - 16 = 0
- 6 = - 8 + 2
- 16 = - 8 * 2
( x - 8 )( x + 2 ) = 0 ⇒ = - 2 ,
= 8
<em>{ - 2 , 8 }</em>
