<span>Arc length = C*(21/360)
so the answer is D</span>
Answer:
The value of Cos (-Ф)
.
Step-by-step explanation:
Given Trigonometric function as :
sin( - Ф ) = ![\frac{- 3}{5}](https://tex.z-dn.net/?f=%5Cfrac%7B-%203%7D%7B5%7D)
- sin Ф = ![\frac{- 3}{5}](https://tex.z-dn.net/?f=%5Cfrac%7B-%203%7D%7B5%7D)
So, sin Ф = ![\frac{ 3}{5}](https://tex.z-dn.net/?f=%5Cfrac%7B%203%7D%7B5%7D)
Now, as sin Ф = ![\dfrac{\textrm perpendicular}{\textrm hypotenuse}](https://tex.z-dn.net/?f=%5Cdfrac%7B%5Ctextrm%20perpendicular%7D%7B%5Ctextrm%20hypotenuse%7D)
So ,
= ![\frac{ 3}{5}](https://tex.z-dn.net/?f=%5Cfrac%7B%203%7D%7B5%7D)
So, perpendicular = 3
And hypotenuse = 5
Now,<u> From Pythagoras Theorem</u>
Base ² = Hypotenuse² - Perpendicular²
Or, Base ² = 5² - 3²
Or, Base ² = 25 - 9
Or, Base ² = 16
∴ Base = ![\sqrt{16}](https://tex.z-dn.net/?f=%5Csqrt%7B16%7D)
I.e Base = 4
Now, Cos Ф = ![\dfrac{\textrm base}{\textrm hypotenuse}](https://tex.z-dn.net/?f=%5Cdfrac%7B%5Ctextrm%20base%7D%7B%5Ctextrm%20hypotenuse%7D)
So, Cos Ф = ![\dfrac{\textrm 4}{\textrm 5}](https://tex.z-dn.net/?f=%5Cdfrac%7B%5Ctextrm%204%7D%7B%5Ctextrm%205%7D)
Now , Since
Cos ( - Ф ) = Cos Ф
So, Cos ( - Ф ) = Cos Ф = ![\dfrac{\textrm 4}{\textrm 5}](https://tex.z-dn.net/?f=%5Cdfrac%7B%5Ctextrm%204%7D%7B%5Ctextrm%205%7D)
Hence The value of Cos (-Ф)
. Answer
Answer:
12 + 4x
Step-by-step explanation:
To solve this you would have to use the distributive property.
The problem would basically go like this.
4 (3+x)
(Distribute)
(4x3) (4 x X)
4x3 = 12, 4 x x = 4x
So the answer would be 12 +4x
Hope this helps :)
Answer:
12
(If needed explanation ask in the comments! ty)
Hope This Helps! •v•