Question

Please find the value of x

Answer 1

x = 8.1

Explanation:

cos(c°) =
`(adjacent)/(hypotenuse)`, where c = 36, adjacent = x, and 10 = hypotenuse.

Therefore:

cos(36) =
`(x)/(10)` (multiply both sides by 10)

10cos(36) = x

After plugging this into a calculator, you get:

8.0901699437 = x

Rounded to the nearest tenth:

x = 8.1

Answer 2

x=8.4

Explanation:

from;cos(36)=opp/hyp

cos(36)=x/10

cross multiply;

x=10×cos(36)

x=10×0.8443

x=8.44

round up to the nearest tenth

so,x=8.4