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Helen [10]
4 years ago
7

(__)^2=(csc x-1)(csc x+1)

Mathematics
2 answers:
Aleksandr [31]4 years ago
8 0
(csc x-1)(csc x+1)=csc²x-1²=csc²x-1=(1/sin x)² -1=1/sin x² - sin²x/sin²x= 
=(1-sin²x)/sin² x = cos² x/ sin² x = (cos x/sin x)²= (cot x)²
sukhopar [10]4 years ago
5 0

Answer:

cot x

Step-by-step explanation:

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Lena [83]

Answer:

Manufacturers has to produce 63 DVD/Blu-Ray players to achieve a minimum cost of $644

Step-by-step explanation:

The cost equation is given as:

C=0.04x^2-5x+800

This is a quadratic equation in general form, which is:

y=ax^2+bx+c

Matching, we can say:

a = 0.04

b = -5

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and the minimum value would be to place that "x" value into the equation.

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Manufacturers has to produce 63 DVD/Blu-Ray players to achieve a minimum cost of $644

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