Answer:
Step-by-step explanation:
has the following properties:
º = 1.75 π (π = 180º)
therefore, z₁ = 13 * [ cos(1.75 π) + i sin(1.75 π) ] = 13*[cos(1.75π - 2π) + i sin(1.75π - 2π)] = 13*[cos(-π/4) + i sin(-π/4)] {this is due to periodicity} = 13*(√2/2 - i √2/2) = 
Second statement is more postulate you can't prove it, so the statement is clearly a thrm.
63+74+x=180
180-63-74=43
x=43
I the answer should be: 25, left in index form
Answer:
56.7
Step-by-step explanation:
2.7 x 21 = 56.7
