Answer:
Step-by-step explanation:
The following are properties of a rhombus:
i) All sides are equal
ii) The diagonals bisect each other at right angle.
iii) Diagonals bisect the angles
iv) Sum of consecutive angles is 180°
The following are properties of a square:
i) All sides are equal
ii) The diagonals bisect each other at right angle.
iii) Diagonals bisect the angles
iv) All angles are right angle
A rhombus is a square only when all its angles are right angles (90°) but all squares are rhombuses because squares have the same property as rhombuses(since All angles are right angles, consecutive angles would add up to 180°). Therefore all rhombuses are not squares but all squares are rhombuses
Answer:
x^2-4x+y^2+6y-108=0
Step-by-step explanation:
Area for a triangle is bh/2 so for this triangle it'd be 8•17/2 = 68 squared units
Twenty four plus (negative nine) minus forty-four plus thirty three minus seventeen.
First, some housekeeping:
cos = 12/13 is incomplete; "cos" must have an argument (input).
cos x = 12/13 is fine; here "cos" has the argument (input) x.
Given that cos x = 12/13, find sin x. To do this, we'll need to find the length of the opposite side, given that the hypo length is 13 and the adj. side length is 12.
12^2 + opp^2 = 13^2, or opp^2 = 169-144 = 25.
Then the opp side could be either 5 or -5. Let's assume that it's +5, and that angle x is in the first quadrant.
Then sin x = opp / hyp = 5/13 (answer)
cos 2 is an entirely different kind of problem. Here you are told what the argument (input) to the cosine function is (it is 2, which here means 2 radians).
Using a calculator: cos 2 = -0.416. Note that the angle 2 rad is in QII, which is why the "adjacent side" is negative and also why the cos of 2 is negative.