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Ierofanga [76]
3 years ago
11

How to do this can you explain it step by step

Mathematics
1 answer:
Lisa [10]3 years ago
6 0

OA and OC are radii of the circle. Hence, OA = OC. So if AO = 40, then OC = 40.
Length of BO = 40 + 45
                       = 85
Using the Pythagoras theorem, you can find out the length of AB since tangents to the circle always have an angle of 90 with the circle.
AB^2 = BO^2 + AO^2
AB^2 = 85^2 + 40^2
AB^2 = 7225 + 1600
AB^2 = 8825
AB = root of 8225
AB = 90.69 to 2 decimal places.

Hopefully this helped :)

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ohaa [14]

Answer:

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Step-by-step explanation:

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8 0
3 years ago
( 7x + 2x - 3x2 + 9x) + (5x + 8x2 - 6x2 + 2x - 5)​
Elena-2011 [213]

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1. In the given figure O is the centre and PQ is the diameter of the circle. if the chord PR is produced to S and QR is joined t
Ksenya-84 [330]

Answer:

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