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wlad13 [49]
3 years ago
14

Need help with trig question

Mathematics
1 answer:
Solnce55 [7]3 years ago
5 0

Answer:

  0 +256i

Step-by-step explanation:

According to Euler's formula, ...

  (4 cis π/8)^4 = (4^4) cis (4×π/8) = 256 cis π/2 = 0 +256i

_____

"cis" is an abbreviation sometimes used for "cosine + i×sine". It simplifies writing the expression. Engineers sometimes simplify it further, writing 4∠(π/8) for the expression in this problem statement.

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Gre4nikov [31]

I think your teacher's just asking for the multiplied out version, so there's no work to do

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NeTakaya
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3 years ago
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6 0
3 years ago
If PN=29cm and MN=13 , then PM=?
HACTEHA [7]

*see attachment for the figure referred to

Answer/Step-by-step explanation:

1. PN = 29

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PN = PM + MN (Segment addition postulate)

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2. PN = 34, MN = 19, PM = ?

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4. MN = 82, PN = 105, PM = ?

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PN - MN = PM (subtract MN from each side)

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5. PM = 100, MN = 100, PN = ?

PN = PM + MN (Segment addition postulate)

PN = 100 + 100 (substitute)

PN = 200 cm

7 0
3 years ago
Please help me
Anit [1.1K]

Answer:

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