Answer:
i√17 ≈ 4.123106i
Step-by-step explanation:
The square root of a negative number is "i" times the square root of its absolute value. It is an imaginary number.
_____
i is generally the symbol used for √(-1). In some fields, such as electrical engineering, where i has a different meaning, the symbol j may be used instead.
Answer:
<em>
and 
</em>
Step-by-step explanation:
According to the given diagram, points C, B and D are in a straight line and AB is a common terminal side of both 
and 
.
So, and are pair of linear angles.
In the diagram, we can see that the side 
lies on 
from left side and on 
from right side.
So,
and
Answer:
The answer is tan²Ф + 1 = sec²Ф
Step-by-step explanation:
∵ sin²Ф + cos²Ф = 1 ⇒ ÷ cos²Ф both sides
∴ sin²Ф/cos²Ф + cos²Ф/cos²Ф = 1/cos²Ф
∵ sin²Ф/cos²Ф = tan²Ф
∵ 1/cos²Ф = sec²Ф
∴ tan²Ф + 1 = sec²Ф
Answer:
C
Step-by-step explanation:
cus irs CCCCCCcCChdjsikdkrkf
