(i)
(ii)
Solve for theta and then you can put it into your other 2 equations. What are the values of a and b?
Could someone please solve these questions. I am struggling with them. Very much appreciated. Donation will be provided
(i) If Cosec theta = 3.2 find theta (in degrees) 0<theta<360
(ii) If sin theta= .7 write down values for
a - sin (180 - theta)
b - sin (360 - theta)
(iii) Using the identity sin^2theta + cos^2theta=1 and the identities for cos(A+B) find:
a - cos 75degrees if cos 45degrees = .707
b - cos 30degrees = 0.866
(iv) Prove that sinx/1-cosx + sinx/1+cosx= 2 cosecx
Thankyou so much for your help. I was able to understand what i actually had to do much better. I am fairly new to trigonometry.
For the proof would this be correct. following on from the last line you gave me.
2sin(x)/1-cos^2(x)
{sin(x)/1-cos(x)} + {sin(x)/1+cos(x)} = 2sec(x)