1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
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.

You might be interested in
343 is 35% of what number
nexus9112 [7]
I believe you multiple 343 times a hundred and the answer you gt you divide it by 35 and then you get 980?
5 0
3 years ago
Read 2 more answers
5 points
Ede4ka [16]

Answer:

7.5in

Step-by-step explanation:

4 0
3 years ago
I need help with both of the Questions.
Sphinxa [80]

15) Basically, this year Chelsea is making 64 cups of soup, and since there are 16 cups in a gallon, Chelsea will make 4 gallons.

16) Option D

5 0
3 years ago
Read 2 more answers
Maria put 18 crayons in 3 different baskets. She put the same number of crayons in each basket. How many crayons did Maria put i
allochka39001 [22]
54 i believe

explanation: if you put 18 crayons in 3 baskets each it’s gotta b 54
4 0
3 years ago
Read 2 more answers
4x10^-6 + 6.8x10^7=
kirill115 [55]
I typed it in a calculator and got 68,000,000, so just correct me if im wrong.
4 0
3 years ago
Other questions:
  • Idk what to do please help, thanks :)
    15·1 answer
  • How many time does 2 go into 19
    8·1 answer
  • What is the answer to this question?
    8·2 answers
  • 14. Prove that the number 10^2019 - 1 is composite
    10·1 answer
  • 21000.7895÷444477777
    12·1 answer
  • 1. Find the distance between the points A(1,0) and B(0,0).​
    9·2 answers
  • Plzzzz helppp..will give brainliest.<br> 9x + 15 = 3x + 15 x=
    11·2 answers
  • Tax on a $12, 985 car is 6%. what is the total price of the car​
    8·1 answer
  • How do you add 23+(2x)<br> ;()<br><br> freE PoInT
    12·1 answer
  • 7. The graph shows the height, h, in feet, of water
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!