Question

Find the value off the following:
cos70°/sin20° + cos55°.cosec35°/ tan5°.tan25°.tan45°.tan65°.tan85°

Answer 1

Answer:

THE ANSWER IS 2.

Step-by-step explanation:

Cos70°÷Sin20°=Cos70°÷Cos70°

=1

Cos55°.Cosec35°=Sin35°.(1÷Sin35)

=1

tan5°.tan25°.tan45°.tan65°.tan85°

=(tan5°.tan85°)(tan65°.tan25°)

=(tan5°cot5°)(tan65°.cot65°)

=1×1=1

So the answer is:->

1+1\1=1+1=2