Now a chord of a circle is such that AB = 10 cm. If the diameter of the circle is 20 cm, then the angle subtended by the chord at the center is.
Radius of circle= 10 cm Length of chord= 10 cm OA =10 =AB =OB now, draw a perpendicular on the chord from the center of the circle which divides the chord into two equal parts. In AAOC OA =10 =AB =OB AD=DB= 5 cm cosec = AD /AO =5 /10 = 1/ 2 = cos60° θ = 60° Hence, the angle subtended by the chord is 60°.
In India, which type of maize is mainly grown
The most accepted theory to explain ascent of sap in plants “transpiration–cohesion–tension mechanism”, was proposed by:
The reddish colour of Red soils develops due to ________
For common plants transpiration ratio varies between:
Grass carp are used for control of–
Who is father of extension in India?
Chlorosis in plants is caused due to deficiency of
Revenue chain is divided into-
Which, among the following membrane transporters, shows active transport mechanism?
The part of plant on which grafting is done is called
