If tan 15° = 2-\(\sqrt{3}\), what is the value of tan 15° cot 75° + tan 75° cot 15°.
Study the given pattern carefully and select the letter that can replace the question mark (?) in it. 
If 0.02x = 0.5y, then find the value of \(\frac{x-y}{x+y}\) is:
\( \frac{13}{12} \)
\( \frac{11}{12} \)
\( \frac{12}{13} \)
\( \frac{11}{13} \)
The rectangle represents a set of calculations that are common across all the given equations. Identify the calculations involved and solve the third equation on the same basis: 