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3 years ago

Drop your insta i dont know what to put they asked for 20 or more so this should work

Mathematics

1 answer:

zlopas [31]3 years ago

6 0

Answer:

underated.jay

Step-by-step explanation:

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What is cos theta when sin theta = sqrt 2/3

Fittoniya [83]

Answer:

Value of cosθ is ±√7/3 .

Step-by-step explanation:

According to the Question , value of :

$\red{\implies sin\theta = \dfrac{\sqrt2}{3}}$

And , we know the identity of sine and cosine as ,

$\boxed{\pink{\sf\implies sin^2\theta + cos^2\theta = 1} }$

Using , this identity we have ;

$\implies sin^2\theta + cos^2\theta = 1 \\\\\implies \bigg( \dfrac{\sqrt2}{3}\bigg)^2 + cos^2\theta = 1 \\\\\implies \dfrac{2}{9} + cos^2\theta = 1 \\\\\implies cos^2\theta = 1 - \dfrac{2}{9} \\\\\implies cos^2\theta = \dfrac{9-2}{9} \\\\\implies cos\theta = \sqrt{\dfrac{7}{9}} \\\\\underline{\boxed{\blue{\bf \implies cos\theta = \pm \dfrac{\sqrt 7 }{3}}}}$

Now , here since θ is in 2nd quadrant and in 2nd quadrant cos is negative . Hence ,the value of cos will be :

$\boxed{\orange{\bf \implies cos\theta =-\dfrac{\sqrt7}{3}}}$

3 0

3 years ago

PLEASE HELP ME , GET ON HONOR ROLL PLEASE NEED YOUR HELP

marta [7]

Answer:

19 ft i think

Step-by-step explanation:

hop ethis helps :) have a nice day

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3 years ago

"Express the difference in the measures of center as a multiple of each measure of variation. Round your answers to the nearest

zimovet [89]

Answer:

unsure but i think the first one

Step-by-step explanation:

8 0

3 years ago

Luden [163]

Is this just free points or is there a question

7 0

3 years ago

Chan hee bought 3.4 pounds of coffee that cost $6.95 per pound how much did he spend on coffee

qaws [65]

$23.63 just multiply 3.4 by $6.95

6 0

3 years ago