What is the exact value of cos 5pi/4 radians?

1 answer:

5 0

-Radical two (square root of two)/2
Because:
5pi/4 = 225 the reference angle for that is 45 degrees, cos 45 = Radical two (square root of two)/2 and because 225 is in quadrant three and only tangent is positive in quadrant 3, the cos is negative

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I need help, I’ve been stuck on this question plz

bezimeni [28]

Answer:

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Step-by-step explanation:

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3 years ago

2a + 4b + c =5 x =-2 a - 4b = -6 y=1

cricket20 [7]

There is no solution ,a+c=-10;b-c=15;a-2b+c=-5 No solution System of Linear Equations entered : [1] 2a+c=-10 [2] b-c=15 [3] a-2b+c=-5 Equations Simplified or Rearranged : [1] 2a + c = -10 [2] - c + b = 15 [3] a + c - 2b = -5 Solve by Substitution :

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// Plug this in for variable c in equation [2]

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// Solve equation [2] for the variable ?

[2] ? = b + 10

// Plug this in for variable ? in equation [1]

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3 years ago

How to find components of a vector given magnitude and angle?

Zanzabum

1. Find the magnitude and direction angle of the vector.
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olya-2409 [2.1K]

Step-by-step explanation:

Hello there!

Use the formula for the volume of a sphere:

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x y
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x y
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You can use the outline of the parabola and then mark the outline with the points in the table.

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