Consider the following statements : 1. There exists at least one value of x between 0 and \frac{\pi}{2} which satisfies the equation \sin ^{4} x-2 \sin ^{2} x-1=0 2. \sin 1.5 is greater than \cos 1.5. Which of the above statements is/are correct? [2015 CDS-I]

UPSC CDS Math Trigonometric Ratios and Trigonometric Identities Questions

Question : 80 of 107

Marks: +1, -0

Consider the following statements :
1. There exists at least one value of x between 0 and ‌

which satisfies the equation sin4x−2sin2x−1=0
2. sin‌1.5 is greater than cos‌1.5. Which of the above statements is/are correct?

[2015 CDS-I]

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