Answer:
4=symmetrical; 4 lines 5=not symmetrical 6=symetrical; 1 line 7=symetrical; 5 lines
8: Isos. trap.=1
Rectangle=2 lines
Square= 8 lines
Rhombus=4 lines
Parallelogram= 0 lines
9 a: A regular pentagon has 5 lines of symetry
9b: a regular hexigon has 12 lines if symetry.
LHS=2t^2/1-t^2
RHS=2t^2/1-t^2
Hence left had side is equal
Step-by-step explanation:
Taking tan x and sec x in the terms of t=tan(x/2)
tan x=2t/1-t^2
sex x=1/cos x
therefore cos x=1-t^2/1+t^2
so sec x=1/1-t^2/1+t^2
sec x=1+t^2/1-t^2
Taking tan x and sec x in the terms of t=tan(x/2)
tan x=2t/1-t^2
sex x=1/cos x
therefore cos x=1-t^2/1+t^2
so sec x=1/1-t^2/1+t^2
sec x=1+t^2/1-t^2
LHS=tanx .tan(x/2)
=2t.t/1-t^2
=2t^2/1-t^2
RHS=sec x-1
=1+t^2/1-t^2-1
=1+t^2-1+t^2/1-t^2
=2t^2/1-t^2
Therefore hence we proved LHS=RHS
=2t.t/1-t^2
=2t^2/1-t^2
RHS=sec x-1
=1+t^2/1-t^2-1
=1+t^2-1+t^2/1-t^2
=2t^2/1-t^2
Therefore hence we proved LHS=RHS
Answer:
Where's the rest of the question?
Step-by-step explanation:
Answer:
i think its
4× + 5y > = 85
Step-by-step explanation:
i hope im right or even close i tryed i should be right tho HAVE A NICE DAY!!
Step-by-step explanation:
The perpendicular line has a slope that is the negative reciprocal of the other line's slope. So, in this case, the slope should be 1/3 (it's positive because a negative times a negative is a positive). This gets rid of all of the answers except for the last, I suppose.
