помогите решить:1)7cosx-4sindx=0
2) sin5x-√3cos5x=0.
1)7cosx = 4sinx
7=4sinx/cosx
7=4tgx
tgx=7/4
x=60*
2)sin5x=√3cos5x
√3=sin5x/cos5x
√3=tg5x
tg5x=√3
5x=tg60*
x=12*
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Answers & Comments
1)7cosx = 4sinx
7=4sinx/cosx
7=4tgx
tgx=7/4
x=60*
2)sin5x=√3cos5x
√3=sin5x/cos5x
√3=tg5x
tg5x=√3
5x=tg60*
x=12*