A) \[h(\cot \,y+\cot \,x)\]
B) \[h(tan\,x+tan\,y)\]
C) \[h(1+tan\,x\cot \,y)\]
D) \[h(tan\,y\cot \,x+1)\]
Correct Answer: C , D
Solution :
Let \[PQ=H\]Solution :
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