Answer:
- 
Step-by-step explanation:
Given 630 < A > 720 then A is in the fourth quadrant where
cosA > 0 and sinA < 0
Given
cosA = 
= 
Then the triangle is a 3- 4 - 5 with opposite side 4, thus
sinA = - 
= - 
Using the trigonometric identity
sin2A = 2sinAcosA
= 2 × - ×
= 
= -
Scalene triangles have 3 sides of different lengths
Isosceles triangles have 2 sides of the same length
Equilateral triangles have 3 sides of the same length
This triangles has a tick mark on 2 sides, meaning that 2 sides are the same length, making this an isosceles triangle
Answer:
18.8 you are right
Step-by-step explanation:
Answer:
6π
Step-by-step explanation:
The period indicates after which time the sine wave repeats.
You divide 2π by the factor in front of your function variable. This is 1/3 for your function.
So 2π/(1/3) = 6π
The answer would be b) the 2 represents the two width pairs
