Question:
Write the complex number
$z=\frac{1-i}{\cos \frac{\pi}{3}+i \sin \frac{\pi}{3}}$ in polar from.
Solution:
According to the question,
We have,
$z=\frac{1-\mathrm{i}}{\cos \frac{\pi}{3}+\mathrm{i} \sin \frac{\pi}{3}}$
$=\frac{\sqrt{2}\left[\frac{1}{\sqrt{2}}-i \frac{1}{\sqrt{2}}\right]}{\cos \frac{\pi}{3}+i \sin \frac{\pi}{3}}$
$=\frac{\sqrt{2}\left[\cos \frac{\pi}{4}-i \sin \frac{\pi}{4}\right]}{\cos \frac{\pi}{3}+i \sin \frac{\pi}{3}}$
$=\sqrt{2}\left[\cos \left(-\frac{\pi}{4}-\frac{\pi}{3}\right)+i \sin \left(-\frac{\pi}{4}-\frac{\pi}{3}\right)\right]$
$=\sqrt{2}\left[\cos \left(-\frac{7 \pi}{12}\right)+i \sin \left(-\frac{7 \pi}{12}\right)\right]$
$=\sqrt{2}\left[\cos \frac{5 \pi}{12}+i \sin \frac{5 \pi}{12}\right]$
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- 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,
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