Answer:
B
Step-by-step explanation:
We can use the law of cosinse:
=
− 2ab cos(C)
Suppose the two sides are a and b, and the angle betweent them is C.
=
− 2*3*4 cos(60)
We can simplify this to get =25-12=13
c=
Answer choice B
Write an expression: Jim earned “j” in tips, and Steve earned “s” in tips. They combined their tips and then split them equally.
1 answer:
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Answer: x=5π/4
Step-by-step explanation:
sin x = cos x
sin^2 x=cos^2 x
sin^2 x+sin^2 x=cos^2 x+sin^2x
2 sin^2 x=1
sin^2 x=1/2
sin x=(1/2)^1/2
sin x=
x=45 degrees, 225 degrees
x=180/4, 5(180)/4
x=π/4, 5π/4 ==> π<=x<=3π/2
x=5π/4