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babunello [35]
3 years ago
12

Find the exact values of cos (3pi/4radians) and sin (3pi/4 Radians)

Mathematics
2 answers:
-BARSIC- [3]3 years ago
8 0
Cos (3π/4) can be written as,
cos (π-π/4) = -cosπ/4 = -1/√2

similarly sin3π/4=sin(π-π/4) = sin π/4 = 1/√2

patriot [66]3 years ago
7 0

If you are doing on  apex the answer is √2/2

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zysi [14]

step 2 would be 10

step 4 would be 10x-x = 9x =7

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6 0
3 years ago
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7 less than the product of a number and 8, increased by a number multiplied by 2
nataly862011 [7]

The expression for 7 less than the product of a number and 8, increased by a number multiplied by 2 is 8n-7 +2n

Given :

7 less than the product of a number and 8, increased by a number multiplied by 2

We need to write the given statement in an expression

Lets 'n' be the unknown number

the product of a number and 8

Product means multiplication

the product of a number and 8 mean n times 8 that is 8n

7 less than the product of a number and 8, subtract 7 from 8n

Expression becomes 8n-7

This is increased by a number multiplied by 2

number multiplied by 2 is 2n

So the final expression for the given statement is 8n-7 +2n

Learn more : brainly.ph/question/1023996

3 0
3 years ago
A class of 30 introductory statistics students took a quiz worth 100 points. the standard deviation of the scores was 0. what mu
bearhunter [10]
This means that everybody answered the same number of items. This means that every data value is equal to the mean. This outcome permits us to say that the sample standard deviation of a data set is zero if and only if all of its values are same or identical.
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Yana and Amber play a word game using tile letters. Each person takes 7 tiles from a set of tiles. Points are earned by using th
aleksley [76]

Answer:

A Yana's average number of points is 0.5 points greater than Amber's

Step-by-step explanation:

i added up all of Yana's points = 15

I added up all of Amber's points = 12

then i divided them both by 6 because there is 6 numbers total so then i got

Yana = 2.5 Amber = 2


2.5 - 2 = 0.5 so Yana's average number of points is 0.5 points greater than Amber's

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You are saving money to buy a new video game. You already have $12, and each week you save another $5. Which expression can you
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Answer:yes 12 +5

Step-by-step explanation:Idrk

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