If $\operatorname{cosec} x+\cot x=\frac{11}{2}$, then $\tan x=$
(a) $\frac{21}{22}$
(b) $\frac{15}{16}$
(c) $\frac{44}{117}$
(d) $\frac{117}{44}$
(c) $\frac{44}{117}$
We have:
$\operatorname{cosec} x+\cot x=\frac{11}{2}$ ...(i)
$\Rightarrow \frac{1}{\operatorname{cosec} x+\cot x}=\frac{2}{11}$
$\Rightarrow \frac{\operatorname{cosec}^{2} x-\cot ^{2} x}{\operatorname{cosec} x+\cot x}=\frac{2}{11}$
$\Rightarrow \frac{(\operatorname{cosec} x+\cot x)(\operatorname{cosec} x-\cot x)}{(\operatorname{cosec} x+\cot x)}=\frac{2}{11}$
$\therefore \operatorname{cosec} A-\cot x=\frac{2}{11}$ ...(ii)
Subtracting (2) from (1):
$2 \cot x=\frac{11}{2}-\frac{2}{11}$
$\Rightarrow 2 \cot x=\frac{121-4}{22}$
$\Rightarrow 2 \cot x=\frac{117}{22}$
$\Rightarrow \cot x=\frac{117}{44}$
$\Rightarrow \frac{1}{\tan x}=\frac{117}{44}$
$\Rightarrow \tan x=\frac{44}{117}$
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All Study Material
- JEE Main
- Exam Pattern
- Previous Year Papers
- PYQ Chapterwise
- Physics
- Kinematics 1D
- Kinemetics 2D
- Friction
- Work, Power, Energy
- Centre of Mass and Collision
- Rotational Dynamics
- Gravitation
- Calorimetry
- Elasticity
- Thermal Expansion
- Heat Transfer
- Kinetic Theory of Gases
- Thermodynamics
- Simple Harmonic Motion
- Wave on String
- Sound waves
- Fluid Mechanics
- Electrostatics
- Current Electricity
- Capacitor
- Magnetism and Matter
- Electromagnetic Induction
- Atomic Structure
- Dual Nature of Matter
- Nuclear Physics
- Radioactivity
- Semiconductors
- Communication System
- Error in Measurement & instruments
- Alternating Current
- Electromagnetic Waves
- Wave Optics
- X-Rays
- All Subjects
- Physics
- Motion in a Plane
- Law of Motion
- Work, Energy and Power
- Systems of Particles and Rotational Motion
- Gravitation
- Mechanical Properties of Solids
- Mechanical Properties of Fluids
- Thermal Properties of matter
- Thermodynamics
- Kinetic Theory
- Oscillations
- Waves
- Electric Charge and Fields
- Electrostatic Potential and Capacitance
- Current Electricity
- Thermoelectric Effects of Electric Current
- Heating Effects of Electric Current
- Moving Charges and Magnetism
- Magnetism and Matter
- Electromagnetic Induction
- Alternating Current
- Electromagnetic Wave
- Ray Optics and Optical Instruments
- Wave Optics
- Dual Nature of Radiation and Matter
- Atoms
- Nuclei
- Semiconductor Electronics: Materials, Devices and Simple Circuits.
- Chemical Effects of Electric Current,