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umka2103 [35]
3 years ago
12

Simplify the expressioncot^2x - cot^2x cos^2x

Mathematics
1 answer:
andrew-mc [135]3 years ago
8 0
Cot^2x - cot^2x cos^2x
= cot^2x - {(cot^2x)(cos^2x)}
= cot^2x { 1 - cos^2x }
= cot^2x { sin^2x }
= (cos^2x/sin^2x) { sin^2x }
= cos^2x
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N= 2

Substitute 2 in for n in expression

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=7 ÷ 1
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If n= 2, the expression equals 7.

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2 years ago
Given the equation 4x2 − 8x + 20 = 0, what are the values of h and k when the equation is written in vertex form a(x − h)2 + k =
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Answer:

The correct option is:

h = 1, k = 16

Step-by-step explanation:

y=4x^2-8x+20 =0

It is a quadratic formula in standard form:

ax^2+bx+c

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a(x − h)2 + k = 0

h is the axis of symmetry and (h,k) is the vertex.

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h= -(-8)/2(4)

h = 8/8

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Step-by-step explanation:

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3 years ago
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