化简sin(π⼀4-α)+cos(π⼀4+α)

2025-02-23 11:04:42
推荐回答(1个)
回答1:

sin(π/4-α)+cos(π/4+α)
=sin(π/4-α)+cos[π/2-(π/4-α)]
=sin(π/4-α)+sin(π/4-α)
=2sin(π/4-α)