Answer:
can you explain more freely about question I did not understand sorry for comments in answet
Answer:
120 degrees and 330 degrees
Step-by-step explanation:
Solve each equation for 0 degrees < x < 360 degrees.
Sqrt 2 cos x + 1 = 0
A.45,315
B.115,245
C.135,225
D.46, 314
Please Help ASAP!
Given the expression √(2cosx+1) = 0
Square both sides of the equation;
√(2cosx+1) = 0
2cosx + 1 = 0
2cosx = -1
cos x = -1/2
x = cos^-1(-1/2)
x = -60 degrees
Since cos is negative in the 2nd and 3rd quadrant then;
x = 180-60 = 120 degrees (2nd quadrant)
x = 270+60 = 330 degrees (3rd quadrant)
Total number of cards = 10
Total number of cards divisible by 5 = 2
{15 , 20}
P(divisible by 5) = 2/10 = 1/5
Answer: 1/5
Answer:
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Answer:
a=-b
Step-by-step explanation:
Or,
b=-a