so there's a right triangle

90 degrees in the bottom left

30 degrees bottom right

15 in length

unknown adjacent

unknown hypotenuse

so i did sin(30) = 15/b

15/sin(30)=30=b

and did tangent(30)=15/a

15 * tan(30)= 8.66=a

is this correct?

Printable View

- August 6th 2010, 11:51 AMgabrielsome one check my trig!!
so there's a right triangle

90 degrees in the bottom left

30 degrees bottom right

15 in length

unknown adjacent

unknown hypotenuse

so i did sin(30) = 15/b

15/sin(30)=30=b

and did tangent(30)=15/a

15 * tan(30)= 8.66=a

is this correct? - August 6th 2010, 11:58 AMAckbeet
What is your "15 in length"? What does that correspond to? The length of the side opposite to the 30 degrees? What is b? The hypotenuse? What is a? The side adjacent to the 30 degrees?

- August 6th 2010, 12:36 PMArchie Meade
- August 6th 2010, 12:42 PMgabriel
so 15/tan(30) = 25.98 app. 26 is this the final correct answer for a?

- August 6th 2010, 12:52 PMArchie Meade