Find m a.) 76 degrees
b.) 14 degrees
c.) 13 degrees
d.) 77 degrees

The correct answer is A) 76 degrees

Step-by-step explanation:

In order to solve the equation for mT, we can use trigonometric functions. Since we are given the side adjacent to the angle and the hypotenuse, we'll use cos.

Cos(α) = ADJ/HYP

Cos(α) = 4/17

Cos-1(α) = .235

α = 76 degrees

since your problem is x^4 = 81, what you have to undeo is the "to the fourth power" part.

the inverse (opposite operation) of "to the fourth power" is "to the fourth root".

  (x^4) ^ ¼   = 81 ^ ¼  

  81 = 3^4     so (3 ^ 4) ^ ¼   =   3 ^ 1   = 3

by hand: (3 ^ 4) ^ ¼   =   3 ^ (4 x ¼) = 3 ^ 1   = 3   (when you take a power to a power, multiply the exponents.)

or, do it by calculator. one way of finding the fourth root is to use ^ (1/4)

step-by-step explanation:

step-by-step explanation:

you divide the denominator by the numerator on both sides and if the quotients are equal then the fractions are equivalent