Find the value of x rounded to the nearest degree

b 44 degrees

Step-by-step explanation:

cos x = adjacent side / hypotenuse

cos x = 15/21

cos x = 5/7

Take the inverse cos of each side

cos ^-1 (cos (x) )= cos ^-1 (5/7)

x =44.4153086

To the nearest degree

x = 44 degrees

The correct answer is option(b).  44°

Step-by-step explanation:

From the figure we can see a right angled triangle with one angle is x° and two sides are given.

To find the value of x

From the given figure we get the adjacent side of angle is given

Therefore we can write,

Cos x = Adjacent side/Hypotenuse

 = 15/21

 = 0.7142

x = Cos ⁻¹ (0.7142)

 = 44°

Therefore the value of x = 44°

The correct answer is option(b).  44°

correct answer:

i^31 = -i

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step-by-step explanation: