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 × -
× 
=
= - 
Answer:
y=-5x+1
Step-by-step explanation:
hope it helps you
Answer:
its actually c
Step-by-step explanation:
6*10=60+40=100
100
100
Answer:
$36.00
Step-by-step explanation:
There are 2 methods
Method 1: 30*1.20=36
Method 2: 30*.20=6 30*6=36