One way it's useful is in the application of phasors in physics. Phasors require you to add up vectors of two different angles, so the cosine angle addition formula can be used if you already know the cosine and sine of the original vector angles.
Answer:
Yes it's D or it's B
Step-by-step explanation:
Answer:
Log x = 3 is the same as Log into base 10 of 3
Recall from Law of Logarithm: if Log a = x , then a = 10^ x
therefore If Log x = 3 , then x = 10^3 = 1000
Step-by-step explanation:
Answer: x=0.9,−0.9
Step-by-step explanation:
Answer:
54 cm²
Step-by-step explanation:
The net of the 3 cm cube has 6 squares, each of which is 3 cm on a side. The area of each is (3 cm)² = 9 cm², so the total area is ...
6×9 cm² = 54 cm²
