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Saptarshi Sadhu

· started a discussion

· 1 Months ago

Math 8 (Question:163036.0)

Please provide correct math

Question:
Find the value of \(\cfrac{1}{1+sin^4\ a}+\cfrac{1}{1+cosec^4\ a}\)
Options:
A) 0
B) 2
C) 4
D) 1
Solution:
Ans: (d)  

\(\cfrac{1}{1+sin^4\ a}+\cfrac{1}{1+cosec^4\ a}\)

(1 + sin⁴α + 1 + cosec⁴α)/ [(1 + sin⁴α)(1 + cosec⁴α)]

 = [2 + sin⁴α + cosec⁴α]/[2 + sin⁴α + cosec⁴α] = 1

Knowledge Expert

· commented

· 1 Months ago

Dear student
We have fixed it.

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