Answer:
12t - 1
Step-by-step explanation:
(9t+5) + (3t-6)
9t + 5 + 3t - 6
12t - 1
The trigonometric formula (or identity) should you use to help simplify and solve the equation is ![cos2x = 1-2sin^2x](https://tex.z-dn.net/?f=cos2x%20%3D%201-2sin%5E2x)
<h2>Trigonometry identity</h2>
Given the trigonometry identity
According to trigonometry identity
Also since
, the expression becomes;
![cos2x = (1-sin^2x)-sin^2x\\ cos2x = 1- 2sin^2x](https://tex.z-dn.net/?f=cos2x%20%3D%20%281-sin%5E2x%29-sin%5E2x%5C%5C%0Acos2x%20%3D%201-%202sin%5E2x)
To simplify the function given, you will substitute
into the original equation to have:
![\cos(2x) - \sin(x) = 1\\ (1-2sin^2x)-sinx=1\\ ](https://tex.z-dn.net/?f=%20%5Ccos%282x%29%20-%20%5Csin%28x%29%20%3D%201%5C%5C%0A%281-2sin%5E2x%29-sinx%3D1%5C%5C%0A)
Hence the trigonometric formula (or identity) should you use to help simplify and solve the equation is ![cos2x = 1-2sin^2x](https://tex.z-dn.net/?f=cos2x%20%3D%201-2sin%5E2x)
Learn more on trig identity here: brainly.com/question/24496175
Answer:
wsp, answer is 5,5 i'm pretty sure
Step-by-step explanation:
or its 0.5
What are factors of -40?
(-20)(2)
(-10)(4) (sum of these factors is 6, which is not what we wanted)
(-5)(8) = -40 and the sum of the factors (-5) and (8) is 3.
{-5, 8} is the list of factors of -40 that add up to 3.
Dang what grade is that in looks hard i might know the answer