asd123456 asd123456

21-06-2017
Mathematics

contestada

Express the complex number in trigonometric form.

-4i

My answer = 4(cos 180° + i sin 180°)

Respuesta :

catgirl564 catgirl564

21-06-2017

cos 180 = -1
sin 180 = 0

So you put in the answer that when you revert it into complex again, it would be -4.

The correct answer would be 4(cos 270 + i sin 270)

Answer Link

Otras preguntas

A carnival sold 135 bottles of juice in one day. They sold 1/3 of the bottles in the first hour and 2/5 of the bottles in the second hour. How many bottles of j

Which statements are true according to the order of the operations? A. 16-(4+7)=12+7=19 B. 10+(6÷3)=10+2=12 C. 7×6+4=7×10=70 D. 2+5×7=2+35=37

The odd- and even - number hotel rooms are on different sides of the hall. Room 231 is between witch two rooms

105.6 L/h = ___ L/min?

Jenny has 50 square tiles. She arranges the tiles into a rectangular army of 4 rows. How many tiles are leftover?

"in 1990s, the international community expressed outrage over nigeria's _____"

PLEASE HELP!!! The two-way relative frequency table shows the relative frequencies of girls and boys who chose peanut butter or ham sandwiches. What percent of

What are the three basic functions organs perform in the human body

An item only costs $16.95 and is on sale for 22% off the original price. The sales tax is 6.5%. Find the cost of the item. EXPLAIN each step.

15 yards of 18 yards percent of change