0

Guest

Courses New

If α is in first quadrant= Π/19.Find value of sin 23α-sin 3α/sin 16α+sin 4α

If α is in first quadrant= Π/19.Find value of sin 23α-sin 3α/sin 16α+sin 4α

Grade:11

1 Answers

Akshay
185 Points
8 years ago
Hint : use [ sin x – sin y = 2* sin{(x-y)/2} * cos{(x+y)/2} ] and [ sin x + sin y = 2* sin{(x+y)/2} * cos{(x-y)/2} ], 
and then use cos x = – cos(pi-x)

Think You Can Provide A Better Answer ?

Other Related Questions on Trigonometry

View all Questions »

ASK QUESTION

Get your questions answered by the expert for free

Answer and earn gift vouchers

Win Gift vouchers upto Rs 500/-

View courses by askIITians

Design classes One-on-One in your own way with Top IITians/Medical Professionals

Click Here Know More

Complete Self Study Package designed by Industry Leading Experts

Click Here Know More

Live 1-1 coding classes to unleash the Creator in your Child

Click Here Know More

a Complete All-in-One Study package Fully Loaded inside a Tablet!

Click Here Know More