Given: ∆abc –iso. ∆, m∠bac = 120° ah ⊥ bc hd ⊥ ac ad = a cm, hd = b cm find: p∆adh

unit

Step-by-step explanation:

Since Here Δ ABC is a isosceles triangle.

Also, and

Thus, ∠ ADH = 90°

That is, Δ ADH is the right angle triangle.

In which, AD = a unit and HD = b unit

And, By the definition of Pythagoras theorem,

⇒

⇒

Since, the perimeter of a triangle = sum of the all sides of the triangle.

Therefore, perimeter of ΔADH = AD + DH + AH

= unit

step-by-step explanation:

f(x)=2x^2 -1 

translation is a function transformation that transform the function in a way of translating. by translating the function its graph is moved  up an down. moving the function f(x) 2 units to the left will be the new function g(x) with the equation: g(x)=f(x+2)=2(x+2)^2 -1