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SOVA2 [1]
3 years ago
10

Henry is asked to find the exact value of cosine StartFraction 10 pi Over 3 EndFraction. His steps are shown below. 1. Subtract

2 pi from StartFraction 10 pi Over 3 EndFraction as many times as possible: StartFraction 10 pi Over 3 EndFraction – 2 pi = StartFraction 4 pi Over 3 EndFraction 2. Find the reference angle for StartFraction 4 pi Over 3 EndFraction: StartFraction 3 pi Over 2 EndFraction – StartFraction 4 pi Over 3 EndFraction= StartFraction pi Over 6 EndFraction. 3. The cosine value for StartFraction pi Over 6 EndFraction is StartFraction StartRoot 3 EndRoot Over 2 EndFraction. 4. The cosine value is positive because StartFraction pi Over 6 EndFraction is in the first quadrant. Which of the following describes Henry’s errors? The reference angle should be StartFraction pi Over 3 EndFraction, and the sign of the value should be negative. The reference angle should be StartFraction pi Over 3 EndFraction, and the cosine value for StartFraction pi Over 3 EndFraction is One-half. The sign of the value should be negative, and the reference angle and quadrant should be determined by subtracting Pi in the first step. The cosine value for StartFraction pi Over 6 EndFraction is One-half, and the reference angle and quadrant should be determined by subtracting Pi in the first step.
Mathematics
2 answers:
deff fn [24]3 years ago
5 0

Answer:

I can conform that it is A.

lapo4ka [179]3 years ago
3 0

Answer:

A. The reference angle should be pi/3, and the sign of the value should be negative.

Step-by-step explanation:

Just took the unit review.

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The formula for the resistance, R, of a conductor with voltage, V, and current , I , is R= V/I. Solve for V.
borishaifa [10]

Answer:

T+V/I

Step-by-step explanation:

multiply both sides by I to get rid of fractions ti=V

7 0
3 years ago
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Any number is divisible by 2 is also divisible by 6 find a counter example to show that conjecture is false
likoan [24]

Answer:

  2

Step-by-step explanation:

  To be divisible by 6, an even number must also be divisible by 3. Two of every three even numbers are <em>not</em> divisible by 3, so are not divisible by 6.

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2 years ago
What is an equation of the line that passes through the points (6, -1) and (1, 4)?
Nataly [62]
Here you go! Hope this helps!

3 0
1 year ago
X² - 2x=0<br> what is this...like what’s the outcome
Tanzania [10]

Answer:

x=0  x=2

Step-by-step explanation:

X² - 2x=0

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x(x-2) = 0

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4 0
3 years ago
Express the calculation “four times as large as 124+645”
Effectus [21]

The calculation of the expression “four times as large as 124+645” end up in 1141.

<u>Step-by-step explanation:</u>

  • The question is asked to Express the calculation “four times as large as 124+645”.
  • The given statement can be written in the expression form to perform the calculations.

Here, the phrase 'four times' represents the multiplication of 4.

⇒ “four times as large as 124+645” = 4(124) + 645

So, the first step is to multiply 4 with 124.

⇒ 4 × 124

⇒ 496

The expression is now modified as “496+645"

We know that, the final result is the addition of the two numbers 496 and 645 which is calculated as

⇒ 496+645

⇒ 1141

Therefore, the calculation of the expression “four times as large as 124+645” end up in 1141.

7 0
3 years ago
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