Answer:
x=150°
Step-by-step explanation:
Using the vertical angle theorem, you can infer that AEC and DEB are in fact the same angle, 20°, and the same goes for FED and CEG, both 130°.
So, x spans AEC and CEG so is 20° + 130° = 150°
Answer:
2 is the right answer.
Step-by-step explanation:
(sin∅-cos∅)²+(sin∅+cos∅)² in this expression we will open the brackets first by squaring the expressions given inside.
(sin²∅+cos²∅-2sin∅cos∅)+(sin²∅+cos²∅+2sin∅cos∅)
Since (a+b)² = a²+b²+2ab and (a-b)² = a²+b²-2ab
⇒(1-2sin∅cos∅) + (1+2sin∅cos∅)
Since (sin²∅+cos²∅) =1
⇒ 1-2sin∅cos∅+1+2sin∅cos∅
⇒ 1+1
⇒ 2
Therefore the option 2 is right answer.
Since no example is being given, let's take for instance 2 functions, one quadratic & the second linear:
y₁=ax²+bx+c & the second y₂=mx+b
The solution of those function is the coordinates (x,y) where both meet at a point . In this case (& in all other cases) you have to state that y₁=y₂
ax²+bx+c = mx + b & solve
example
y₁= x²+3x-1 & y₂=x-2
x²+3x-1 = x-2==>x²+3x-1-x+2 = x²+2x+1
Find the root of x²+2x+1 & you will find x'=x" -1
We have found the value of x= - 1, to find y, just plug into any of the equation x by its value & you will find y=-3
So the solution of this system of equation is at their pint(s) of intersection, that is (-1,-3)
