Opt practice questions 2.
(a) Name the conic section formed when a plane cuts a right circular cone parallel to its base.

(b)write the equation of line of symmetry of the parabola given by y= ax +bx+c.

3.
(a) Express cos2A in terms of cotA.
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step-by-step explanation:

9-15%

you are uyytr tyy

step-by-step explanation:

the polynomial is a perfect square trinomial of the form a^2-2ab+b^2:

option a. true

step-by-step explanation:

9x^2-12x+4

comparing with the form a^2-2ab+b^2

1.) a^2=9x^2

solving for a: square root both sides of the equation:

sqrt(a^2)=sqrt(9x^2)

a=sqrt(9) sqrt(x^2)

a=3x

2.) b^2=4

solving for b: square root both sides of the equation:

sqrt(b^2)=sqrt(4)

b=2

to be a perfet square trinomial 2ab must be equal to 12x. let's check:

2ab = 2 (3x) (2)

2ab = 12x

correct