Lesson 10 of 14
Checkpoint: values, relations and the identity
Show on a big screenFive questions on the middle three lessons. Retry as often as you like.
An equilateral triangle has side 4. What is tan 60°?
sin A = 8/17 and cos A = 15/17. What is tan A?
What is sin²30° + cos²30°?
A triangle gives sin A = 7/25. What is cos A?
A solution says sin A + cos A = 1 for every acute A. Is that true?
0 of 5 answered
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