Guest

Arg of sin(16∏/15)+i(1+ cos(16∏/15)

Arg of sin(16∏/15)+i(1+ cos(16∏/15)

Grade:12

1 Answers

Pratham Ashish
17 Points
14 years ago

hi

here u can write 1+ cos(16∏/15) = 2cos2 (8∏/15) ......[1+cosx = 2cos^2(x/2).................]

also write sin(16∏/15) = 2sin(8∏/15)cos(8∏/15)

now d expression becomes

2cos(8∏/15)[sin(8∏/15) +i cos(8∏/15) ]


so ur arg wud be simply 8∏/15

Think You Can Provide A Better Answer ?

ASK QUESTION

Get your questions answered by the expert for free