`stackrel(harr)(dg)` and `stackrel(harr)(eg)` are tangent to circle c and circle f. the points of tangency are a, b, d, and e. if m`/_dfe` = 140°, what is m`/_acb`?

General Idea:

Sum of angles subtended at the centre and point of contact by tangents down from an external point is supplementary (180°).

Applying the concept:

Considering the point of contact of two tangents of large circle, we can write

We are given , so the equation will become

{Subtracting 140 on both sides}

Considering the point of contact of two tangents of small circle, we can write

Subtracting 40 on both sides, we get...

Conclusion:

your answer would be 10x - 1

plants store their excess carbohydrate in the form of starch so that it could be used as energy source later on. the excess carbohydrate is converted into starch in the plastid i.e. chloroplast & this process occurs in the presence of sunlight. it is an insoluble polymer of glucose which gets stored in cell organelles named as amyloplasts. in some plants, starch is also stored in roots and embryos.