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Elan Coil [88]
3 years ago
6

Find the cos(19pi/6)

Mathematics
1 answer:
jolli1 [7]3 years ago
7 0
Π=180º

Cos(19π/6)=cos(19*180º/6)=cos (570º)=cos(210º+360º)=cos(210º)=
=-cos 30º=-√3 / 2≈-0.866...

Answer: cos(19π/6)=-cos 30º=-√3/2
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Anyone can find this?
Mademuasel [1]

Answer:

a=34 °

b=76°

c=70°

d=70°

Step-by-step explanation:

The angles 76° , 34°, and c make up a triangle. A triangle has a sum of 180°.

180° = 76° + 34° +c

c=70°

The parallel lines create 2 congruent triangles so we can use the same angles from the first triangle for the second one.

7 0
3 years ago
Find the value of k. Then find the angle measures of the polygon
pochemuha

Answer:

45° + 2k + k = 180°

=> 45 + 3k = 180

=> 3k = 180 – 45

=> k = 135/3

=> k = 45

other two angles :-

2k = 2×45 = 90°

k = 45°

7 0
3 years ago
Can someone help me with this question
Aleksandr-060686 [28]

When x=0 then y=3.  Only B goes through (0,3).

Answer: B

3 0
3 years ago
An equilateral triangle has a perimeter of 15x3 + 33x5 feet. What is the length of each side?
RUDIKE [14]
(15x3) feet ÷ 3 = (5x1) feet = 5 feet 
33 feet x 5 feet=165 feet
165 feet ÷ 3 = 55 feet 
55 feet÷(33 feet÷3)=55 feet ÷ 11 feet = 5 feet

Ans: 
5 + 11 x 5 feet
5 0
3 years ago
Read 2 more answers
ANSWER ASAP!!!!! Evaluate ƒ(x) = |3x – 2| for ƒ(–5) and ƒ(7). Question 7 options: A) ƒ(–5) = 8, ƒ(7) = 7 B) ƒ(–5) = 12, ƒ(7) = –
saul85 [17]

Answers:

  • f(-5) = 17
  • f(7) = 19

====================================

Work Shown:

Plug in x = -5. Use PEMDAS to simplify

f(x) = |3x-2|

f(-5) = |3(-5)-2| ... replace every x with -5

f(-5) = |-15-2|

f(-5) = |-17|

f(-5) = 17

---------------------

Repeat for x = 7

f(x) = |3x-2|

f(7) = |3*7-2| ... replace every x with 7

f(7) = |21-2|

f(7) = |19|

f(7) = 19

7 0
3 years ago
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