Find the phasor form of:
1. i(t) = 10 cos (10t + 63°) + 15 cos (10t − 42°) A .
(Round the final answers to two decimal places and insert ± in the answer field(s), if required.)

Explanation:

A tension or current expressed in cosine form and with a positive sign can be converted directly into a phasor. This is done by indicating the tension and the offset angle:

So:

You can sum the phasors simply using a calculator, however, let's do it manually:

Let's find the rectangular form of each phasor using the next formulas:

For

So:

For

So:

Hence:

Finally:

x+2 because it just doubles hon so the pattern can actually tell you the expression.

so for example,

if x=2 then 2+2 is 4

if x=4 then 4+4 is 8

and so on and so forth.

i really hope that this makes sense and you out in a way hon: )