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Sagot :

Solution:

Consider the following diagram:

Then, we want to find h : the measure of the ladder. To do that, we can use the following trigonometric identity:

[tex]\cos (77)\text{ = }\frac{8}{h}[/tex]

solving for h, we get:

[tex]h\text{ = }\frac{8}{\cos (77)}\text{ = 35.56}[/tex]

Then, the correct answer is:

h = 35.56

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