3 years ago

Help please i give brainiest

1 answer:

5 0

Answer:

38. The angle is 125 degrees.

39. 1/4

Step-by-step explanation:

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Norma-Jean [14]

This is easily done after writing both complex numbers in exponential form:

$z_1=20\,\mathrm{cis}226^\circ=20e^{226^\circ i}$

$z_2=5\,\mathrm{cis}76^\circ=5e^{76^\circ i}$

Then

$\dfrac{z_1}{z_2}=\dfrac{20e^{226^\circ i}}{5e^{76^\circ i}}=4e^{(226-76)^\circ i}=4e^{150^\circ i}$

In trigonometric form, this is

$\dfrac{z_1}{z_2}=4\,\mathrm{cis}150^\circ=4(\cos150^\circ+i\sin150^\circ)=\boxed{-\dfrac{\sqrt3}2+\dfrac i2}$

8 0

3 years ago

boyakko [2]

Answer: its the last choice

Step-by-step explanation:

6 0

3 years ago

photoshop1234 [79]

This is the same as the last question you asked. 63 + 61 = 124. 180 - 124 = 56. Angle ACB is 56 degrees.

8 0

3 years ago

garik1379 [7]

Your answer would be .39

5 0

4 years ago

kolezko [41]

0.294

hope this helps

3 0

3 years ago