Question

3. Answer the following questions-
a. Write functions of stem in a plant
b. Define-
i. parasitic roots
ii.prop roots
iii.insectivorous plant
c. What is difference between taproot and fibrous root
d. Write few changes in which-
i.energy is absorbed
ii.energy is released
e. Burning of candle is a chemical change .justify your answer.

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Answer 1

Answer:

45° or 30°

Depending upon ABC point position

Step-by-step explanation:

in figure A,B and,C are three points on a circle with center o such that angle BOC =30 AND ANGLE AOB =60 . IF D IS A POINT ON THE CIRCLE OTHER THAN THE ARC ABC ,FIND ANGLE ADC ​

As figure is missing there could be few cases for position of ABC point

ABC  ,  ACB   , BAC

case 1 as ABC

∠AOC  = Arc Angle

∠AOC = ∠AOB + ∠BOC

=> ∠AOC = 60° + 30

=>∠AOC = 90°

∠ADC = (1/2) ∠AOC

=> ∠ADC = (1/2) * 90°

=> ∠ADC = 45°

Case 2 ACB

∠AOB is the arc Angle

∠ADC = (1/2) ∠AOB

=>  ∠ADC = (1/2) * 60°

=> ∠ADC = 30°

Case 3 BAC is not possible as

∠AOB > ∠ BOC

so A   can not lie between BC points

Explanation: