Question

sino -sin 50 + sin 90 -sin 130
cos 0 -cos 50 -cos 90 + cos 130
= cot 40​

Answer 1

Answer:

1-sin 50 - cos 40/1-cos 50 + sin 40

Step-by-step explanation:

sin0-sin50+sin90-sin130

cos0-cos50-cos90+cos130

=0-sin50+1-cos40/1-cos50-0+sin40

=1-sin 50 - cos 40/1-cos 50 + sin 40