Using tangent function in template, unexpected results

Configuration
1

I need to use the tangent value of the solar elevation, but in the template testing section of developer tools I get unexpected results. Here is the code:

name: "Solar Shades Light Control Percent"
unique_id: solar_shades_light_control_percent
state: >
  {% set tangent = tan(states('sensor.sun_solar_elevation'))  %}
  
  {{ states('sensor.sun_solar_elevation') }}
  {{ tangent }}

Just now, the solar elevation sensor reports 32.72 and tangent of about 3.66. but the correct tangent of 32.72 is about .64. What is wrong here?

2

It expects the value you are supplying to be in radians…

{% set tangent = tan(states('sensor.sun_solar_elevation') | float * pi/180)  %}
  
  {{ states('sensor.sun_solar_elevation') }}
  {{ tangent }}
3

Thank you so much for your prompt help. I did not realize that this function (unlike my simple calculator) required the input to be in radians.

4

Nerds love radians… :grin: