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kkurt [141]
3 years ago
10

Simplify(5+2i)(1+3i)

Mathematics
1 answer:
hichkok12 [17]3 years ago
3 0
(5 + 2i)(1 + 3i)

5 * 1 = 5

5 * 3 = 15i

2i * 1 = 2i

2i * 3i = 6i^2

So we have...

5 + 15i + 2i + 6i^2

5 + 17i + 6i^2

In order....

6i^2 + 17i + 5
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2 years ago
From the top of a fire tower, a forest ranger sees his partner on the ground at an angle of depression of 40º. If the tower is 4
stira [4]

Answer:

distance of his partner from the base of the tower ≈ 53.6 ft(nearest tenth)

Step-by-step explanation:

The forest ranger is on top of a fire tower and he sees his partner on the ground at the angle of depression of 40°. The tower is 45 ft tall.  

The illustration forms a right angle triangle.

The adjacent side of the triangle is the distance from the partner to the base of the tower.

Using tangential ratio

tan 40° = opposite/adjacent

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6 0
3 years ago
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I hope this helps

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This is just additional info down below, but it might also be helpful :)

x is an independent variable

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