Question

cos 80 / sin 10
pls answer fast
i'll mark brainliest to who ans is fast and correct

Answer 1

Answer:

cos 80= cos ( 90 - 10 )

We know that cos( 90- Ф )= sin Ф [ using the required law of trigonometry ]

Therefore, cos 80= sin 10

Now, cos 80/ sin 10= sin 10/ sin 10= 1

[ any value divided by itself= 1 ]

Answer 2

1

Step-by-step explanation:

cos80/sin10

cos(90-10)/sin10

sin 10/ sin 10

=1