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cot⁴ A + cot² A = 1 cot2A (cot2A+1) =1 cos2A/sin2A (cosec2A) =1 Cos2A =sin4A Cos2A =(1-cos2A)2 Cos2A =1+cos4A-2cos2A cos⁴ A – 3cos² A. = -1.
What happens when camphor is heated?
Copper is extracted from which ore?
What is the colour of base?
For making of parachute, which polymeric substance used?
Which of the following substances are ozone-depleting?
Select the correct answer from the code given below.
I. ...
_______is the purest form of Carbon found in Nature.
Main source of Naphthalene
Which fossil fuel is formed under earth by the decomposition of vegetable matter lying under water by anaerobic bacteria in the absence of oxygen?
What is the common name for Calcium Sulfate Dihydrate?
What type of glass is used in the manufacturing of cooking utensils?
