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2 years ago

Note Figure is not drawn to scale.

Mathematics

1 answer:

wolverine [178]2 years ago

4 0

Answer:

your answer is...

Step-by-step explanation:

50.265482457437

I used my calculator

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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

2 years ago

<img src="https://tex.z-dn.net/?f=%5Cfrac%7B4x-1%7D%7B3%7D" id="TexFormula1" title="\frac{4x-1}{3}" alt="\frac{4x-1}{3}" align="

Anuta_ua [19.1K]

Answer:

19x-1/3

Step-by-step explanation:

it is the right answer we have to take lcm for this by taking only lcm we can solve it..

4 0

3 years ago

PLS HELP find the unknown side of the triangle below (round to the nearest tenth)

Nonamiya [84]

22.9 is the closest but not exact. It was probably rounded off.

I used the formula: leg^2+leg^2=hypotenuse^2

(You can use that formula for any right triangle.)

7 0

3 years ago

Factorise 8x+12 ffffffffffdfffdfdfd

bagirrra123 [75]

Answer:
Factor out 4 out 8x-12
= 4(2x-3)

7 0

3 years ago

Read 2 more answers

Write an expression for: the product of 4 and a number. Use x as the variable. Who ever gets it correct first gets brainliest.

maksim [4K]

X(4*1) because I’m just doing what I’m told.

7 0

2 years ago