Listed below are identities for cos 2x and sin 2r: cos 2x = 1 cos x -1 sin'x %3D sin 2r = 2 cos x sin x Write similar identities for cos 3x and sin 3x and then cos 4x and sin 4.x. Use a pattern to predict identities for cos 5x and sin 5x.

Q: 18.프-=0 x-1 0 =

A: x-1x-xx-1= 0 So, (x-1)2-x2(x)(x-1)= 0

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A: Given: -

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Q: 2. xy+3 1= Solve the System.

A: x2 - xy + 3y2 = 17 x - y = 4 Hence, x = y + 4

Q: What is the solution of the following system {3x+3y=10 -9x-9y=-30

A:

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Q: 5) y = 4x 12x - 3y = 0 Solving Systems of Equations using Substitution

A:

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Q: 1) y= 4x- 12 y =-8x

A:

Q: 3. Solve the linear system of equations: I1 + 3r2 973 + 6x4 30 %3D I3 I4 10 %3D

A: To solve the given system of linear equations.

Q: [7×+y=13 [28×+4y=-12 Classify each system and determine the number of solutions

A:

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A:

Q: each

A:

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