Every Android-user knows the pre-installed calculator app, but most may miss more complex calculator functions and download another calculator app from the play store.
With a Huawei Smartphone, there is no need for another calculator anymore. By tilting the device horizontally, you will have access to functions like tangens and sin/con. 

Android 10 | EMUI 10.0
Step 1:  Tap on  Calculator
Step 2:  Tilt your device horizontally to show complex functions
  1. Tap on Calculator
  2. Tilt your device horizontally to show complex functions

Huawei Instructions
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