need help pls i got the wrong answer

cerenetie  Feb 21, 2018

Note that  the sine of an angle  is just  opposite side / hypotenuse


Here.....the opposite side  = 11.8  and the hypotenuse  =12


So...we need to use the sine inverse  (arcsin) function to determine the angle this makes with the ground


arcsin ( 11.8 / 12)  =  angle measure  =  79.5°


So....the ladder is not safe with this angle



Here's a pic :



cool cool cool

CPhill  Feb 21, 2018

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