Consider the following for real numbers α, β, γ and δ: 1. \sec \alpha = 1/4 2. \tan \beta = 20 3. \cosec y = 1/2 4. \cos \delta=2 How many of the above statements are not possible ? [2019 CDS-I]

UPSC CDS I 2019 Math Paper

Question : 60 of 100

Marks: +1, -0

Consider the following for real numbers α, β, γ and δ:
1.‌sec‌α=

2.‌tan‌β=20
3.‌cosec‌y=

4.‌cos‌δ=2
How many of the above statements are not possible ?

[2019 CDS-I]

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