= $sin^2 A – (1 – sin^2 A)$ $\cos ^5 x+\frac{\cos^5 x}{\sin^5 x}$ In the first quadrant cos and sin are equal when $9x =45$° d) $2 + \sqrt{3}$, Question 13: If $\sin x+\frac{1}{\sin x}=\frac{5}{2}$ then $\tan {x}+\cot {x}=?$, a) 0 Pure identity-based questions: One can solve these questions only if he/she is thorough with the identities. Hi Friends, Let us assume an angle of θ1 lying in the 1st quadrant and an angle θ in quadrant one and two combined. 25 Very important Trignometry questions for SSC CHSL Exam. Now, cos x =2 is not possible. If $\cos(2x-20^{\circ})=\sin(2y+20^{\circ})$ , then the value of $\tan(x+y)$ is, a) $0$ maximum value = $c+\sqrt{a^{2}+b^{2}}=0+\sqrt{1^{2}+1^{2}}=\sqrt{2}$ Geometrically, these are identities involving certain functions of one or more angles. (adsbygoogle = window.adsbygoogle || []).push({}); Notify me of follow-up comments by email. $ \sin ^5 x+\cos ^{5} x$ It is for the preparation of SSC. so the answer is option B. Filed Under: CBSE Tagged With: formula of trigonometry for class 9, Inverse Trigonometric Formulas, Math Formulas, Trigonometric Formulas, Trigonometric Formulas for Class 10, Trigonometric Formulas for Class 11, Trigonometric Formulas for Class 9, Trigonometric Formulas List, Trigonometric Formulas PDF, Trigonometric Formulas Sheet, Trigonometric Formulas Table, RD Sharma Class 11 Solutions Free PDF Download, NCERT Solutions for Class 12 Computer Science (Python), NCERT Solutions for Class 12 Computer Science (C++), NCERT Solutions for Class 12 Business Studies, NCERT Solutions for Class 12 Micro Economics, NCERT Solutions for Class 12 Macro Economics, NCERT Solutions for Class 12 Entrepreneurship, NCERT Solutions for Class 12 Political Science, NCERT Solutions for Class 11 Computer Science (Python), NCERT Solutions for Class 11 Business Studies, NCERT Solutions for Class 11 Entrepreneurship, NCERT Solutions for Class 11 Political Science, NCERT Solutions for Class 11 Indian Economic Development, NCERT Solutions for Class 10 Social Science, NCERT Solutions For Class 10 Hindi Sanchayan, NCERT Solutions For Class 10 Hindi Sparsh, NCERT Solutions For Class 10 Hindi Kshitiz, NCERT Solutions For Class 10 Hindi Kritika, NCERT Solutions for Class 10 Foundation of Information Technology, NCERT Solutions for Class 9 Social Science, NCERT Solutions for Class 9 Foundation of IT, PS Verma and VK Agarwal Biology Class 9 Solutions, NCERT Solutions for Class 10 Science Chapter 1, NCERT Solutions for Class 10 Science Chapter 2, Periodic Classification of Elements Class 10, NCERT Solutions for Class 10 Science Chapter 7, NCERT Solutions for Class 10 Science Chapter 8, NCERT Solutions for Class 10 Science Chapter 9, NCERT Solutions for Class 10 Science Chapter 10, NCERT Solutions for Class 10 Science Chapter 11, NCERT Solutions for Class 10 Science Chapter 12, NCERT Solutions for Class 10 Science Chapter 13, NCERT Solutions for Class 10 Science Chapter 14, NCERT Solutions for Class 10 Science Chapter 15, NCERT Solutions for Class 10 Science Chapter 16, CBSE Previous Year Question Papers Class 12, CBSE Previous Year Question Papers Class 10. The identities don’t refer to particular geometric figures but hold for all angles. =>$\tan^2 x+1=2\tan x$ = $x^2 – (1 + x^2) * \frac{x^2 – 1}{x^2 + 1}$ So 4x – 50 = 90 – y Using: cos θ = sin (90° – θ) 2(x + y) = – 90° $=0$, $cos^2x + (1 + sinx)^2 = 3$ We know that, $sin\theta = \frac{tan\theta}{sec\theta}$ a) 3 In Q1 all Trigonometric Ratios are positive. If you are also preparing for any competitive exam then this pdf is very useful for you because many questions are asked from the mathematics formula pdf in competitive exams. = 1, Expression : $sin\theta + sin^2\theta = 1$

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