# 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 degreeradian angle θ2 same unit as θ1 base a 6digit10digit14digit18digit22digit26digit30digit34digit38digit42digit46digit50digit area S perimeter L height h
 $\normal Triangle\ (a,b,\theta\rightarrow S)\\(1)\ area:\hspace{50} S={\large\frac{a^2}{2}}{\large\frac{\sin{\theta_1}\sin{\theta_2}}{\sin{(\theta_1+\theta_2)}}}\\(2)\ height:\hspace{40} h=a{\large\frac{\tan\theta_1\tan\theta_2}{\tan\theta_1+\tan\theta_2}}\\(3)\ perimeter:\ L=a \left ( 1 + {\large\frac{\sin\theta_2}{\sin(\theta_1+\theta_2)}}+{\large\frac{\sin\theta_1}{\sin(\theta_1+\theta_2)}} \right ) \\$

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

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