Paper 2 Flashcards by Grace Beglan

Q

when using the area of a sector formula

A

the angle has to be in radians (2/9 pi)

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Q

the area of the sector

A

8.73cm

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Q

the solutions to 5sin2theta = 9tantheta

A

-180, -161.6, -18.4, 0, 18.4, 161.6, 180

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Q

what is the smallest positive solution?

A

6.6

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Q

cos2A

A

2cos^2A - 1

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Q

1 - cos3x = sin^2x

A

-90, 0, 90, 138.6

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Q

area of the badge

A

18.0

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Q

perimeter of the badge

A

19.6

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Q

Rcos(x-a)

A

root 17cos(x-1.326)

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Q

minimum

A

337cm

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Q

t =

A

6.09

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Q

co-ordinates

A

(5root2, -4)

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Q

explaining there is only one root

A

number of roots = number of intersectons vewee lines

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Q

a =

A

-2 + root5

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