Would appreciate some math help !!

Arturo Mejia asked Oct 1, 2023

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32 votes

Arturo Mejia asked Oct 1, 2023

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13 votes

Answer:

(D).
(√(2) )/(8) cis
$(47\pi )/(36)$

Explanation:

cis
$\alpha$ × cis
$\beta$ = cis (
$\alpha$ +
$\beta$ )

~~~~~~~

(√(6) )/(6) cis
$(5\pi )/(9)$ ×
(√(3) )/(4) cis
$(3\pi )/(4)$ = (
×
)[cis (
$(5\pi )/(9)$ +
$(3\pi )/(4)$ )] =
(√(2) )/(8) cis
$(47\pi )/(36)$

Moud answered Oct 7, 2023

by Moud

2.8k points

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