Question

the value of tan A/2 - cot A/2 + 2cot A is​

Answer 1

Answer:

Protoplasm       1. Purkinje  

   Vacuoles       2. Tonoplast       Leucoplast       3. Brain of the cell

     Nucleus     4. Chromosome      

23 pairs       5. Colourless plastids

Answer 2

Answer:Proof that cotA/2-tanA/2=2cotA Get the answers you ... cot A/​2-tan A/2 ... 2cosA / (2sin A/2 cos A/2) ... multiply divide by 2

2 answers

 

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57 votes:  

cot A/2-tan A/2= (cos A/2)/(sin A/2) - (sin A/2)/(cos A/2)= {(cos A/2)² - (sin A/2)²} / ...

Step-by-step explanation: