The triangle △ABC is right-angled with a right angle at corner C and angle v degrees at corner A. Which alternative is correct.

Question

The triangle △ABC is right-angled with a right angle at corner C and angle v degrees at corner A. Which alternative is correct.

Then:

1| AC | = | AB | sin v

2| BC | = | AB | cos v

3| AC | = | BC | tan v

4| BC | = | AC | cot v

5| AC |= | AB | cos v.

Answer 1

AC is the adjacent side, BC is the opposite side, and AB is the hypotenuse

cosv) = adjacent / hypotenuse = lACl / lABl