I'm sorry, but your expression "Tan²a*cos²a+cos²aсрочнооо" does not seem to be a valid mathematical equation. Please provide a clearer expression or specific question so that I can assist you better.
I'm sorry, but your expression "Tan²a*cos²a+cos²aсрочнооо" does not seem to be a valid mathematical equation. Please provide a clearer expression or specific question so that I can assist you better.