Answer:
a) cosθ = 
Step-by-step explanation:
<u><em> Step(i):</em></u>-
Given point ( x , y ) = ( - 2 , 3 )
We know that the polar co-ordinates
x = r cos θ and y = r sinθ
where

<u><em>Step(ii)</em></u>:-
x = r cos θ
cosθ 
cosθ = 
cosθ = 
It can help you by showing you what you do more simplified. For example 3(x+5) is 3 time x + 3 times 5
Answer:
x=-1
Step-by-step explanation:
just like 8/8 is 1 the same concept only you add a negative