Question

Обчислить sin(a+B), если sina= 0.6; sinB= 0.8;
0*

Answer 1

sin (a +b) = sin a cosb + sin b cos a = 0.6*0.6 +0.8*0.8 = 0.36 + 0.64 = 1
cos a^2= 1- sin a^2, cos b^2=1-sinb^2