Degree of reaction for reaction turbine is _____________

• A. 1- cot x /2(cot x ‚Äö√Ñ√∂‚àö√ë‚àö¬®cot y )
• B. 1+ cot x /2(cot x ‚Äö√Ñ√∂‚àö√ë‚àö¬®cot y )
• C. 1- cot x /2(cot x +cot y )
• D. 1+ cot x /2(cot x +cot y )