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YoGesh Borkar

· started a discussion

· 1 Months ago

QUESTION IS WRONG (Question: 233150.0 )

COT@ is replaced by SIN@/COS@ whereas COT@=COS@/SIN@

Question:

The numerical value of \(\left ( \cfrac {1}{cos\ \theta}+\cfrac{1}{cot\ \theta} \right )\left ( \cfrac {1}{cos\ \theta}-\cfrac{1}{cot\ \theta} \right )\) is:

Options:
A) 0
B) –1
C) +1
D) 2
Solution:

Ans: (c)

Manish Purohit

· commented

· 1 Months ago

its in denominator , and replaced correctly , you are assuming for numerator
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