Thank you for registering.

One of our academic counsellors will contact you within 1 working day.

Please check your email for login details.
MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping

SinA+Sin3A+Sin5A+Sin7A+.......+Sin29A=????????????????~

SinA+Sin3A+Sin5A+Sin7A+.......+Sin29A=????????????????~

Grade:12

1 Answers

PUSHPAK
13 Points
4 years ago
sin(A) + sin(A+2A) +sin(A+4A) …............+sin(A+28A)
A, 3A , 5A............... 29A are in AP with common difference 2A. 
hence sum ={ sin[( 1st + last term)/2] X sin (n x d/2)} / sin d/2
 on solving we get 
(sin(15A) X sin 29A ) / sin A

Think You Can Provide A Better Answer ?

Provide a better Answer & Earn Cool Goodies See our forum point policy

ASK QUESTION

Get your questions answered by the expert for free