If O is center of circle and angle CBO is 40° then what are values of angle BCO and

Mathematics

2 answers:

Aleksandr [31]3 years ago

8 0

If any line drawn from center of the circle (OC in the diagram) bisect the chord of circle (AB in the diagram), then it is said to be perpendicular to chord AB.
So OC is perpendicular to CB, and we can say that triangle OCB is the Right Triangle.

In the Right Triangle OCB,
angle BCO = 90°
angle COB = 90° - angle CBO = 90° - 40° = 50°

So, option A is the final answer, 90° and 50°.

Igoryamba3 years ago

8 0

If any line drawn from center of the circle (OC in the diagram) bisect the chord of circle (AB in the diagram), then it is said to be perpendicular to chord AB.

So OC is perpendicular to CB, and we can say that triangle OCB is the Right Triangle.

In the Right Triangle OCB,

angle BCO = 90°

angle COB = 90° - angle CBO = 90° - 40° = 50°

So, option A is the final answer, 90° and 50

You might be interested in

How to do this please help!

ratelena [41]

How many times does 3 go into 18? 6 times so your answer would be .6 or 0.6

4 0

3 years ago

Jamie purchased a condo in Naples, Florida, for $699,000. She put 20% down and financed the rest at

ololo11 [35]

By applying the formulas of present and future values of annuity we can solve this problem. In this mortgage problem, first we have to find loan amount after the down payment. It is 699,000 - 699,000 * 0.2 = 559,200$. We have to set it as PV (Present Value) of annuity. Using the PV formula $PV = A \frac{[1- \frac{1}{(1+r)^{N}}]}{r}$ , we first find A, which is an annual payment. Exact calculation with mortgage calculator gives us A = 33,866.56$. After finding it, plugging this number into FV (Future Value) formula $FV = A\frac{[(1+r)^{N}-1]}{r}$ , we find the value of the future value and it is 1,185,329.66$. And the total financial charge is 1,185,329.66 - 559,200 = 626,129.66$