• Best of luck to the class of 2024 for their HSC exams. You got this!
    Let us know your thoughts on the HSC exams here
  • YOU can help the next generation of students in the community!
    Share your trial papers and notes on our Notes & Resources page
MedVision ad

Yet another problem (1 Viewer)

D

DarkDude

New Member
Joined
Sep 30, 2005
Messages
16
Gender
Male
HSC
1999
This one involves proving trig identities

prove (tanx + cotx - 1)(sinx + cosx) = (secx/cosec^2x) + (cosecx/sec^2x)
 
N

Nobuo Uematsu

New Member
Joined
Apr 30, 2005
Messages
12
Gender
Undisclosed
HSC
N/A
DarkDude said:
This one involves proving trig identities

prove (tanx + cotx - 1)(sinx + cosx) = (secx/cosec^2x) + (cosecx/sec^2x)
Click to expand...
(tanx + cotx - 1)(sinx + cosx)
=(sinx\cosx+cosx\sinx-1)(sinx+cosx)
=(sin²x\cosx+sinx+cosx+cos²x\sinx-sinx-cosx)
=(secx\cosec²x+cosecx\sec²x)
 
You must log in or register to reply here.

Users Who Are Viewing This Thread (Users: 0, Guests: 1)

Top