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Ugo [173]
3 years ago
5

Joseph leans a 20-foot ladder against a wall so that it forms an angle of 69° with the

Mathematics
1 answer:
barxatty [35]3 years ago
5 0

Answer:

18.67 ft

Step-by-step explanation:

     |\

     |   \

     |      \

h    |         \     20 ft

     |            \

     |               \

     |--        69°  \

     ---|----------------

For the 69° angle, h is the opposite leg, and 20 ft is the hypotenuse.

sin A = opp/hyp

sin 69° = h/20

h = 20 * sin 69°

h = 18.67

Answer: 18.67 ft

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