Simplify 13 over the quantity of negative 3 plus 2i.

13

−

3

+

2

i

Multiply by

−

3

−

2

i

−

3

−

2

i

to make the denominator of

13

−

3

+

2

i

real.

13

−

3

+

2

i

−

3

−

2

i

−

3

−

2

i

Combine.

13

(

−

3

−

2

i

)

(

−

3

+

2

i

)

(

−

3

−

2

i

)

Expand

(

−

3

+

2

i

)

(

−

3

−

2

i

)

using the FOIL Method.

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13

(

−

3

−

2

i

)

−

3

⋅

−

3

−

3

(

−

2

i

)

+

2

i

⋅

−

3

+

2

i

(

−

2

i

)

Simplify.

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13

(

−

3

−

2

i

)

9

−

4

i

2

Simplify each term.

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13

(

−

3

−

2

i

)

9

+

4

Reduce the expression by cancelling the common factors.

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−

3

−

2

i

fghrtyhrtsyut jyt u6su

step-by-step explanation:

(sin 42)/31. = sinx)/37

sinx = 37 (sin42)/31

= 37× 0.66/31 = 0.787

x= 51.9

other angle opposite to y = 180-51.9-42

= 180- 93.9 =86.1

so

sin42)/31 = sin 86.1)/y

0.021 = 0.997 /y

y= 0.997/0.021 =47.47