Question

Use a calculator to approximate tan 78° and round to
four decimal places.

Answer 1

.9795 is what the calculator give you

Answer 2

Answer: Using a calculator, we input sin(78.35) and get 0.9794 (rounded to 4 decimal places)

Explanation:

There are 60 minutes (minutes are denoted as ') in one degree so 21/60 = 0.35° so the angle is 78.35°.