Cot=cos/sin
so, it becomes sin^2+cos^2=1
that proves it
Answer:
Part A:the sum of Side 1 and Side 2= 5x^2+7x-4 Part B all you have to do is the same thing, but subtract the sum of side 1 and 2 from the total. part c they are closed under subtraction.
Step-by-step explanation:
They equal different things. If you simplify the second equation, it is 15x-4 = 15x-12 because of the 3 outside of the paranthesis. Therefore, the equation is wrong.
Answer:
40 square yards
Step-by-step explanation:
The backyard is rectangular and it's dimensions are 7 yards long and 8 yards wide.
The area of a rectangle is given as:
A = L * W
where L = length
W = width
Therefore, the area of the backyard is:
A = 7 * 8 = 56 square yards
Elliana wants to plant sunflowers on 16 square yards of the backyard and the rest of the backyard will be used for a pool.
The area left for the pool will therefore be:
56 - 16 = 40 square yards
40 square yards will be left for the pool.
Answer: Never
Step-by-step explanation:
In a triangle the 3 angles have to add up to 180 degrees and if there are 2 90 degree angles the sum is 180 which is not possible to add more degrees without going over
