Every line from the tangent to the centre is 90°. This is said in the circle theorems.
So angle OBC and ODC are 90°.
angle O is twice the size of angle F. This is another circle theorem.
Therefore angle O is 152°.
The quadrilateral of ODBC would equal to 360°. Which means 90° + 90° + 152° = 332°
360° - 332° = 28°.
The answer is 28°
A bag contains 8 yellow marbles and 6 blue marbles. what number of yellow marbles can you add to the bag so that the ratio of yellow to blue marbles is 2:1? YOU HAVE 8 YELLOW MARBLES SO BY ADDING 4 MORE YOU HAVE (8+4)=12.
Is really nice, don't you think?
Answer:
20 is the answer for the question
