1
NDA 2019 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
What is $$\sin (\alpha + \beta ) - 2sin\alpha cos\beta + sin(\alpha - \beta )$$ equal to?
2
NDA 2019 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
If $$\cos ec\theta = {{29} \over {21}}$$, where 0 < $$\theta$$ < 90$$^\circ$$, then what is the value of 4 sec$$\theta$$ + 4 tan$$\theta$$ ?
3
NDA 2019 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
Consider the following statements
1. cos $$\theta$$ + sec $$\theta$$ can never be equal to 1.5 .
2. tan $$\theta$$ + cot $$\theta$$ can never be less than 2 .
Which of the above statements is/are correct?
1. cos $$\theta$$ + sec $$\theta$$ can never be equal to 1.5 .
2. tan $$\theta$$ + cot $$\theta$$ can never be less than 2 .
Which of the above statements is/are correct?
4
NDA 2019 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
What is the length of the chord of a unit circle which subtends an angle $$\theta$$ at the centre?
Questions Asked from Trigonometric Angles and Equations (Marks 2.5)
Number in Brackets after Paper Indicates No. of Questions
NDA Subjects
Mathematics
Algebra
Sets, Relations and Functions Logarithms Quadratic Equations and Inequalities Sequence And Series Binomial Theorem Matrices Determinants Permutations and Combinations Probability Complex Numbers Vector Algebra Three Dimensional Geometry Statistics
Trigonometry
Trigonometric Angles and Equations Inverse Trigonometric Function Height and Distance Properties of Triangles
Coordinate Geometry
Calculus
English
General Studies