Trig Ratios

Front

What is the definition of \(\sin\theta\)?

Back

\(\sin\theta = \frac{opposite}{hypotenuse}\)

Front

What is the definition of \(\cos\theta\)?

Back

\(\cos\theta = \frac{adjacent}{hypotenuse}\)

Front

What is the definition of \(\tan\theta\)?

Back

\(\tan\theta = \frac{opposite}{adjacent}\)

Front

What is \(\sin(45\degree)\)?

Back

\(\sin(45\degree) = \frac{\sqrt{2}}{2}\)

Front

What is \(\sin(30\degree)\)?

Back

\(\sin(30\degree) = \frac{1}{2}\)

Front

What is \(\cos(60\degree)\)?

Back

\(\cos(60\degree) = \frac{1}{2}\)

Front

What is \(\tan(45\degree)\)?

Back

\(\tan(45\degree) = 1\)

Front

What is the Pythagorean identity for sine and cosine?

Back

\(\sin^2\theta + \cos^2\theta = 1\)

Front

What is the value of \(\sin(90\degree)\)?

Back

\(\sin(90\degree) = 1\)

Front

What is the value of \(\cos(0\degree)\)?

Back

\(\cos(0\degree) = 1\)