Teaching Bihar STET Paper 1 (माध्यमिक) Mock Test 2024 Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities

यदि cos4  θ - sin4  θ = k है, तो \(\frac{{1 + k}}{{1 - k}}\) का मान है:

1
cot2 θ 
2
24
3
tan2 θ 
4
cosec2 θ 
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