Answer:
166
Step-by-step explanation:
1) the area of triangles on the left and right sides: 2*13
2) the area of triangles on top and bottom sides: 10*12
3) the area of the rectangle in the middle: 10*2
4) Altogether: 2*13+10*12+10*2=166
We have that
tan x=5
we know that
tan x =sin x/ cos x
sin x/ cos x=5------> squaring-----> sin² x/cos² x=25
remember that
sin² x+cos² x=1-----> cos² x=1-sin² x
substitute
sin² x/[1-sin² x]=25
sin² x=25-25*sin² x
26*sin² x=25
sin² x=25/26
sin x=5/√26
cos² x=1-(5/√26)²----> 1-(25/26)----> 1/26
cos x=1/√26
the answers are
sin x=5/√26
cos x=1/√26
You could have 6 groups of four, or 2 groups of 12, or 4 groups of 6 or 12 groups of 2 or 3 groups of 8 or 8 groups of 3
Answer:
24/96 ?
or 1/4 ?
Step-by-step explanation:
f - 6 = -2f + 3(f - 2)
f - 6 = -2f + 3f - 6
f + 2f - 3f = -6 + 6
0 = 0
Every number is solution this equation.
