Answer:
Step-by-step explanation:
cos^-1(6/13)=62.5136°
sin(2*62.5136°)=0.8189
cos(2*62.5136°)=-0.5740
0.75 because 100cm = 1m so you just move the decimal to the right by 2
Answer:
A = 21.65 cm squared
Step-by-step explanation:
The basic area formula for a triangle is
We have our base as 5, so we can find the height using right triangle trig. Side BC is opposite the given angle, which is the height, and we are given side CD as 5 which is the base. Using the tangent ratio to find side BC:
which simplifies to
5 tan(60) = x so
x = 8.66
Filling in for the area:
so
A = 21.65 cm squared
Answer: 5 times 5 plus 11 plus 11
Step-by-step explanation:
Creating an algebra problem that equals to 47.
5 times 5 is 25
25 plus 11 is 36
36 plus 11 is 47
This in what I got:
(-7i)(10i)
-70i