# Area of a triangle given base and angles Calculator

## Calculates the area, perimeter and height of a triangle given the base and two angles.

 angle θ1 degree radian angle θ2 same unit as θ1 base a 6digit10digit14digit18digit22digit26digit30digit34digit38digit42digit46digit50digit area S perimeter L height h
 $\normal Triangle\ (a,b,\theta\rightarrow S)\\(1)\ area:\hspace{50} S={\large\frac{a^2}{2}}{\large\frac{\sin{\theta_1}\sin{\theta_2}}{\sin{(\theta_1+\theta_2)}}}\\(2)\ height:\hspace{40} h=a{\large\frac{\tan\theta_1\tan\theta_2}{\tan\theta_1+\tan\theta_2}}\\(3)\ perimeter:\ L=a+{\large\frac{h}{\sin\theta_1}}+{\large\frac{h}{\sin\theta_2}}\\$
Area of a triangle given base and angles
 [1-6] /6 Disp-Num5103050100200
[1]  2017/12/08 15:02   Male / 30 years old level / An engineer / Useful /
Purpose of use
Useful to find out the area and volume of part of structure where there is curved, arched, semicircle and chamfered type area.
Comment/Request
[2]  2017/10/26 07:19   Male / Under 20 years old / High-school/ University/ Grad student / Very /
Purpose of use
Trying to find a formula.
[3]  2017/06/11 01:52   Male / 60 years old level or over / A teacher / A researcher / Very /
Purpose of use
Checking my own calculations.
[4]  2017/03/02 02:56   Female / 40 years old level / Others / Very /
Purpose of use
To calculate the height of electric utility lines. Using the formula to solve for "c" {unknown height} to which the height to eye level must be added. "a" is the ground distance to the utility pole and "b" is the angle obtained through use of a protractor. These calculations are spot-on and do not require the use of "tangible" and potentially dangerous measuring devices.
[5]  2016/08/05 15:54   Female / 40 years old level / Self-employed people / Very /
Purpose of use
Calculate the side of a house under the roof pitch to where the it meets the side wall with estimated angles.
[6]  2016/03/12 17:42   Female / 20 years old level / A homemaker / Very /
Purpose of use
To better my math skills

Sending completion

To improve this 'Area of a triangle given base and angles Calculator', please fill in questionnaire.
Male or Female ?
Male Female
Age
Under 20 years old 20 years old level 30 years old level
40 years old level 50 years old level 60 years old level or over
Occupation
Elementary school/ Junior high-school student
High-school/ University/ Grad student A homemaker An office worker / A public employee
Self-employed people An engineer A teacher / A researcher
A retired person Others
Useful?
Very Useful A little Not at All
Purpose of use?