Answer:
sin(a + b) = sinacosb + cosasinb;
tana = 20/21, then cosa = - 1/√1 + (20/21)2 = - 21/29, sina = tanacosa = 20/21·(- 21/29) = - 20/29;
sinb = √1 - (- 4/5)2 = 3/5
sin(a + b) = - 20/29·(-4/5) + (- 21/29)·3/5 = 80/145 - 63/145 = 17/145
Answer:21
Step-by-step explanation:
The kid makes 7 dollars an hour.
7*2=14
7*3=21
7*5=35
It passes through the point (3,4). Given that the center of the circle is the point (0,0). We know that the equation of the circle is given by : (x-a)^2 + (y-b)^2 = r^2 where (a,b) is the center and r is the radius.
BC =YZ
