Any explain this to me a little bit morebetter
Answer:
-8i
Step-by-step explanation:
To multiply numbers is polar form
z1 = r1 ( cos theta 1 + i sin theta 1)
z2 = r2 ( cos theta 2 + i sin theta 2)
z1*z2 = r1*r2 (cos (theta1+theta2) + i sin (theta1+theta2)
z1 = 2(cos 70° + i sin 70°)
z2 = 4(cos 200+ i sin 200)
z1z2 = 2*4 (cos (70+200) + i sin (70+200)
z1z2 = 8 (cos(270) + i sin (270))
= 8 (0 + i (-1))
=-8i
Given:
In the given circle, ∠ADB = 270° and length of ADB = 61.26 m
To find the radius of the circle.
Formula
The formula to determine the radius is given by

Substituting arc length = 61.26,
, we get;



Thus, the radius is 13 m
Answer:
I think the answer is A but I'm not 100% sure.
Step-by-step explanation:
Answer:
The correct option is C.
Step-by-step explanation:
In a triangle, then sum of two smaller sides is greater than the length of third greatest side.
Let, in a triangle ABC, If the length of sides are
, then

In option A,

Therefore option A is incorrect.
In option B,

Therefore option B is incorrect.
In option C,

Therefore option C is correct.
In option D,

Therefore option D is incorrect.