ACT Math 4.3 Trigonometry
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ACT Math: Trigonometry Drill 4, Problem 3. What is the length of side b?
|Foreign Language||Arabic Subtitled|
|Geometry||Right Triangles and Trigonometry|
|Product Type||ACT Math|
|Trigonometry||Solving right triangles|
Trigonometric relations in right triangles
We can do that by using the Pythagorean theorem...which
is A squared plus B squared equals C squared. We plug the values in, and get that 4 squared
plus B squared equals 9 squared. 16 plus B squared equals 81.
Subtract 16 from both sides, and we get that B squared equals 65.
Take the square root of both sides, and we have that B equals the square root of 65.
Which is answer choice C.