Help with number 41?

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1 Answer
MattyMatty
Mar 5, 2018

#"The method is right"#

Explanation:

#"Nommez / Name"#
#x " = l' angle entre le sol et l'échelle / the angle between the"#
#" ground and the ladder"#
#"Alors on a / Then we have"#

#tan(90° - x) = 68/149#
#90° - x = arctan(68/149) = 24.53 °#
#=> x = 90° - 24.53° = 65.47°#

#"Parce que x est entre 65° et 70° la méthode est bonne. /"#
#"Because x is between 65° and 70° the method is right."#

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