I am not the mathematician
The scale for the second values is 56/8 = 7
C = 3 x 7 = 21
C= 21
Hi there!
~
cosec 20 -cot 40= 1/sin 20 - cos 40/sin 40
= (sin 40 -cos 40 sin20)/(sin 40 sin 20)
= 1/sin 40 ( 2 cos 20 - cos 40)
=1/sin20 ( 2 cos(60-40)-cos 40)
=1/sin40( 2 cos 60 cos 40 - 2 sin 60 -sin 40-cos 40)
Put the value of cos 60
= 1/sin 40 ( 2 sin 60 sin 40)
=root(3)
Hope this helped you!
The number 20 has TWO square roots which are -20 and 20.....I hope this helps!!! Have a great day!!
2416 I believe because 58,000/12= 4833 and 4833/2=2416