Question

Найти sin b ,если cos b=4/5

Answer 1

sin β = √(1-cos²β) = √( 1 - (45)² ) = √(1- 1625) = √(925) = 35
sin β = 35

Answer 2

sin β = √(1-cos²β) = √( 1 - (45)² ) = √(1- 1625) = √(925) = 35
sin β = 35