Question

(senb+cosb)^2=1+2senb×cosb​

Answer 1

Explicación paso a paso:

sen²b+cos²b=1

(senb+cosb)²=1+2senb×cosb

sen²b+2senb×cosb+cos²b=1+2senb×cosb

(sen²b+cos²b)+2senb×cosb= 1+2senb×cosb

1+2senb×cosb=1+2senb×cosb