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2 years ago

Find the exact value of tan(pi/12) using the sum and difference formulas

2 answers:

7 0

Π/12 is half of π/6, which is 30 degree
tan(α/2)=(1-cosα)/sinα)
plug in the values: tan(π/12)=(1-cosπ/6)/sin(π/6)=(1-√3/2)/(1/2)=2-√3

JulsSmile [24]2 years ago

4 0

Answer:

Step-by-step explanation:

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-8z+(4.5)+3.5z+7y-1.5

bogdanovich [222]

Answer:

$\boxed{\sf{7y+3-4.5z}}$

Step-by-step explanation:

In order to combine like terms, you have to isolate x and y from one side of the equation.

$\sf{-8z+\left(4.5\right)+3.5z+7y-1.5}$

First, thing you do is remove parentheses.

$\Longrightarrow: \sf{-8z+4.5+3.5z+7y-1.5}$

Solve.

Then, you combine like terms.

$\Longrightarrow:\sf{-8z+3.5z+7y+4.5-1.5}$

Add/subtract the numbers from left to right.

-8z+3.5z=-4.5z

Rewrite the problem down.

$\Longrightarrow: \sf{-4.5z+7y+4.5-1.5}$

Solve.

4.5-1.5=3

$\Longrightarrow: \boxed{\sf{7y+3-4.5z}}$

Therefore, the correct answer is 7y+3-4.5z.

I hope this helps, let me know if you have any questions.

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1 year ago

20 points A rancher is planning the goat pen shown in the diagram. Determine the value of x, given that the rancher plans to use

4vir4ik [10]

I think i know what it is...
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2 years ago

issac opens his bank account with $500. he deposits $40 each month? write a function that shows the amount in isaacs account aft

bearhunter [10]

500-40x7 soooo your answer would be 220

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2 years ago

Read 2 more answers

Noah's family also wants to blow up a total of 60

bezimeni [28]

Answer: They each will get 9 balloons

Step-by-step explanation: I got my answer by doing 60-24=36 then i divided it between each of the 4 family members with equals 9 per famil member!

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Jet001 [13]

6+ y= 2 and 6+y= -2.

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