ADP and ABQ are tangents to the circle, centre O. C lies on the circumference of the circle.
D
P
Giving reasons for all the
statements you make, work out
angles DCO, CBO, OCB, and BCD,
all in terms of x.
O
Hence, work out obtuse angle DOB
and prove that y = 2x.
2x
B
Not drawn accurately

i belive those are the ones that are under 90 degreese.

d) by the cross product property, ab^2 = bc multiplied by ad

step-by-step explanation:

we are given

in the given triangle abc

angle a is 90° and segment ad is perpendicular to segment bc

we can see that

triangle(abc) and triangle(abd) are similar because they have common side and same angle (90 degree)

so, triangles(abc) and abd are similar

since, they are similar

so, the ratio of their sides must be equal

we get

now, we can cross multiply

and we get

so, this could be step to prove it

can you make your screen more see able?

then i might be able to .

answer: c.  

step-by-step explanation:

mixtures containing substances that get attracted to magnet can be separated using a magnet. we can separate iron from a mixture of sand and iron, as only iron attracts to the magnet.