Question

In the adjoining figure the radius of a circle with centre C is 6 cm, line AB is a
tangent at A. Answer the following questions.
(1) What is the measure of ZCAB? Why?
(2) What is the distance of point C from
line AB? Why?
(3) d(A,B)= 6 cm, find d(B,C).
(4) What is the measure of ZABC ? Why?
A B
Fig. 3.19​

Answer 1

Answer:

function of melatonin is to mediate dark signals and provide night information, a “hormone of darkness,” rather than be the hormone of sleep. It has also been thought to be an “endogenous synchronizer” that stabilizes and reinforces various circadian rhythms in the body.