Sine, cosine, and tangent ratios

SOH-CAH-TOA: define each ratio in a right triangle and compute it from side lengths.

Standards:G-SRT.C.6

Try it: three questions

Real questions from the practice bank. Tap an answer to check it.

Question 1 of 3

A clock hand rotates 210° from 12 o'clock. Express this rotation in radians.

Question 2 of 3

Convert 5π/12 radians to degrees.

Question 3 of 3

Convert 5π/6 radians to degrees.

How this fits in

Sine, cosine, and tangent ratios is one skill in the Trigonometry unit. Students read the unit lesson, then earn a bronze, silver, or gold medal on their last 10 answers. Medals never go down. A mastered unit comes back for review after 1, 3, 7, 16, and 35 days so it stays learned.

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