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sweet-ann [11.9K]
3 years ago
15

Evalaute the following without using a calculator: cos(13pi/6)

Mathematics
2 answers:
strojnjashka [21]3 years ago
6 0
Answer is in the attachment below. Please open it up in a new window to see it in full.

Harman [31]3 years ago
5 0
the\ cos\ function\ is\ periodic:\ \ \ the\ period=2 \pi\\\\cos(2 \pi + \alpha )=cos \alpha \\\\------------------------\\\\cos\bigg{(} \frac{\big{13 \pi }}{\big{6}}\bigg{)}=cos\bigg{(} 2 \pi +\frac{\big{ \pi }}{\big{6}}\bigg{)}=cos\bigg{(} \frac{\big{ \pi }}{\big{6}}\bigg{)}= \frac{\big{ \sqrt{3} }}{\big{2}}
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torisob [31]

Answer:−

1

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Step-by-step explanation:−

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Simplify

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−

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(

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8 0
3 years ago
What does evaluate mean? I have to do a math problem for a post-test and I don’t know what the heck Evaluate means!
earnstyle [38]

Answer:

Evaluate: to determine or set the value or amount of; appraise: to evaluate the property. to judge or determine the significance, worth, or quality of; assess: to evaluate the results of an experiment. Mathematics. to determine or calculate the numerical value of (a formula, function, relation, etc.).

Hope this helps! Please mark Brainliest!

6 0
3 years ago
Read 2 more answers
Help me find the missing angles
Keith_Richards [23]

Answer:

  b) 105°

  d) 130°

Step-by-step explanation:

An external angle has the same measure as the sum of the remote internal angles.

b) ? = 25° +80° = 105°

d) ? = 35° +95° = 130°

_____

This should be fairly obvious if you consider that the adjacent internal angle together with the external angle totals 180°, and the adjacent internal angle together with the other two internal angles totals 180°.

If the two "remote" angles are A and B, and the adjacent internal angle is C, then we have in symbols ...

  A + B + C = 180° = ? + C

If we subtract C, then we find ...

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8 0
3 years ago
What is the math problem for 9,288 divided by 43
S_A_V [24]

Answer:

9,288 ÷ 43 = 216

Step-by-step explanation:

9,288 ÷ 43

First divide 9,288 by 43  we get quotiest as 216 and remainder 0

= 216

7 0
4 years ago
If vector v has an initial point at P1 and a terminal point at P2, write v as multiples of the basis vectors That is, write v in
pantera1 [17]

Answer:

v=9i+3j

Step-by-step explanation:

The given vector, v has initial point at P1 = (−5, −2) and terminal point at P2 = (4, 1).

The vector v is found by subtraction the initial point from the terminal point.

v=<4,1>-<-5,-2>

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v=<9,3>

We write v as multiples of the basis vectors to obtain:

v=9i+3j

8 0
3 years ago
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