Question

11 sin 70 degree/7 cos 20 degree - 4 cos 53 degree coses 37 degree/7 tan 15degree tan 35 degree tan 55 degree tan 75 degree

Answer 1

using trigonometry complementary angles ir will be
11/7 - 4/7
=7/7
=1

Answer 2

11/7-4/7 is the ans of your questions