Hi there!
We can begin by multiplying by its conjugate:
Simplify using the identity:
Take the square root of the expression:
Multiply again by the conjugate to get a SINGLE term in the denominator:
Simplify:
Use the above trig identity one more:
Cancel out sinA:
Split the fraction into two:
Recall:
Simplify:
Answer: OPTION C.
Step-by-step explanation:
The area of a triangle can be calculated with the following formula:
Where "b" is the base of the triangle and "h" is the height of the triangle.
You know that all the triangles that compose the large triangle are equal.
According to the information given in the exercise, the base and the height of any small triangle are:
Therefore, the area of any of them is:
Since there are 4 equal triangles, you need to multiply the area obtained by 4 in order to find the area of the large triangle. This is:
3x60= 180 is the missing variable
Answer:
hello,
Step-by-step explanation:
y=k(x-a')²+b'
focus is (a',1/(4k)+b')
2x²=-120y
==> y=-2/120x²
==> y=-1/60(x-0)²+0
focus= (0,-15)
Answer:
Step-by-step explanation:
Tatiana ordered a floral arrangement with 60%roses. The florist told her she would put 15 roses in the arrangement. How many total flowers should Tatiana expect in the floral arrangement she ordered