ACT Math 1.5 Trigonometry

ACT Math: Trigonometry Drill 1, Problem 5. Can you simplify the expression?

ACT Math	Trigonometry
ACT Mathematics	Trigonometry
Foreign Language	Arabic Subtitled Chinese Subtitled Korean Subtitled Spanish Subtitled
Geometry	Right Triangles and Trigonometry
Language	English Language
Product Type	ACT Math
Trigonometry	Trig graphs Use of trigonometric identities Values and properties of trigonometric functions

00:28

And sec alpha equals one over cos alpha. Now our fraction looks like this: one over

00:36

sin alpha ALL OVER one over cos alpha.

00:40

Now to simplify the sandwich, we multiply one over sin alpha by the reciprocal of one

00:45

over cos alpha to get cos alpha over sin alpha. And since we know that cos alpha over sin

00:52

alpha equals cotangent alpha...

00:54

...we can determine that the answer is B.

00:57

Now we are definitely going to chow down on this thing... as soon as we can get our tongue untied...