Explain to me just this one line 1+z = 2 cos(θ/2)(cos(θ/2) + i sin(θ/2))what happened to i sin(θ/2)) in the other two lines which follow?
thanks very much for helping with 1 and 9 number 8 is still giving me some trouble though
so number 8 is has trigonometry identities in it?
for the first one I got a to be -0.67 and 1.5 when b is 9 and -4, respectively
1. The complex number 'a' is such that a^2=5-12i use an algebraic method to find the two possible values of 'a' 8. The complex number z is given by z=cosTheta + isinTheta where -1/2pi< or equal to Theta less than or equal to 1/2pi. a. show that |1+z|=2cos(1/...
number one is supposed to be -6<c<6 number two is supposed to be c>5 and number three is supposed to be k=8
1. Given that the straight line y=c-3x does not intersect the curve xy=3, find the range of values for c. 2. Find the range of values for c for which the line y=cx+6 does not meet the curve 2x^2-xy=3. 3. Find the range of values for k for which 8y=x+2k is a tangent to the curv...
what is (5 3/5 divided by 1 5/9) - (1 1/5) squared? what is (five and three over five divided by one and five over nine) minus (one and one over five) squared? the answer is suppose to be 2 4/25 (two and four over twenty-five) but I'm not sure how to work out the second pa...
(In school the topic I'm now doing is TOURISM.) 1) In tourism, what does long stay and group travel mean? 2)What is the Jamaica Tourist Board and how does it helptourism? 3) What is the 'Meet the People Programme' and how does it help tourism?
thank you very much, your a big help.