First we use sin(a+b)= sinacosb+sinbcosa
and cos(a+b)=cosa cosb -sinasinb
tan(x+pi/2)= sin(x+pi/2) / cos(x+pi/2)
and sin(x+pi/2) = sinxcospi/2 + sinpi/2cosx =cosx,
<span>cos(x+pi/2) = cosxcospi/2- sinxsinpi/2= - sinx,
</span> because <span>cospi/2 =0, </span>and <span>sinpi/2=1
</span><span>=tan(x+pi/2)= sin(x+pi/2) / cos(x+pi/2)= cosx / -sinx = -1/tanx = -cotx
</span>from where <span>tan(x+pi/2)=-cotx</span>
2n=14 n being the “number” divide 2 on both sides and you’re left w n=14/2 or7
Answer:
area of first
parallelogram
= 25x8
=200m^2
area of second
parallelogram
12x7
=84f^2
Step-by-step explanation:
I hope it's helpful for you
Answer:
Step-by-step explanation:
- 1/4(x - 2/3) =
- 1/4x - 1/4(2/3) =
- 1/4x - 1/6
Correct choice is A
Answer:The triangle is dilated by a factor of 1/2
Step-by-step explanation:
