# Posts by Juilian

Total # Posts: 3

**Trigonometry**

I can't figure out the answer to this problem Use a right triangle to write the expression as an algebraic expression. (Assume x is positive) Tan(sec¯¹ [sq rt.x² + 4/x])

**Trigonometry**

I can't figure out the answer to this problem Tan(sec¯¹ [sq rt.x² + 4/x])

**Math**

How would you find the sine of 30° without using a calculator?