Find the principal value of the following expressions. Write your answer in the form a + ib.

(a)

(b)

(c)

  (a) -0.266255 -0.963903i

  (b) -1.381098

  (c) -2.156385 +0.273077i

Step-by-step explanation:

A suitable calculator is very handy for such questions. See attached.

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Euler's relation and the definitions of sin and cosh in exponential terms are helpful.

(a)

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(b)

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(c)

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The useful relations are ...

false

step-by-step explanation:

the reason i say this is because for a certain length of sides you can pick any two and the length is wither equal or greater than the third side and in this case it's not.

3 + 5 = 8

8 is smaller than 9 which is the third side.

hope this : )

you need to add a picture