Find cos(2theta) if cos(theta)= 3/4

1 answer:

6 0

Sin theta = 8/17 and theta is in the second quadrant. Find sin(2theta),cos(2theta),tan(2theta) exactly sin(2theta) cos(2theta) tan(2theta) sin(2theta) would it be 2 x (8/17) cos(2theta) would be 2 x (15/17) tan(2theta) would be 2 x (8/17 divided by 15/17) is this correct?

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X=small bag
y=large bag

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(5x+3y=260)*4 =20x+12y=1040
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subtract two equations: 2y=40
divide:                           y=20
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Answer:

B. BC = 18 so ∆ABC ～ ∆DEF by SAS

Step-by-step explanation:

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The pertinent formula is A = P (1 + r/n )^(nt), where
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Here, A = $35000 ( 1 + 0.04/4)^(4*6)
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