2.5*7 = 17.5. If it's easier for you, multiply 2.5 by 5 then add 2.5*2.
let's recall that corresponding angles are equal, thus 105° twins, also let's recall that a flat-line has 180°.
since the two sides stemming from Ɣ are twins, the angles they make at the base are also twins, bearing in mind that a triangle has a sum of all interior angles of 180°.
The period will be the length for one cycle of the function.
answer: 10
It’s 90 degrees because it’s a right angle