Need help with this answer ASAP can some teach me how to do it

Step-by-step explanation:

In a right triangle, 30 is the adjacent side, and x is the hypotenuse.

cosθ = adjacent / hypotenuse

Substitute the give numbers.

cos 48° = 30 / x

x = 44.8 (corr. to the nearest tenth)

x = 45 units

Step-by-step explanation:

The angle has a side adjacent to it while the hypotenuse is missing.

Sine = opposite / hypotenuse

Cosine = adjacent / hypotenuse

Tangent = opposite / adjacent

From the following functions, cosine is the suitable function to solve this problem.

cosΘ = adjacent / hypotenuse

cos(48) = 30 / x

x = 30 / cos(48)

x = 44.8 ≈ 45

last option

step-by-step explanation:

given that δdef is right and isoceles,

assuming that side df is the hypotenuse means that de an ef are the other 2 sides that intersect at 90° and are of equal length.

because they are of equal length, we can say that they are congruent

because they intersect at 90°, their slopes must be opposite reciprocals.

only the last option satisfies these conditions.