August 2022 1 1 Report
1)2sin6a/5cos3a, если sin3a=0,4;2)4sin(a+3pi)-2cos(3pi/2+a)/5sin(a-2pi);3)Найти tg^2a,если 6sin^2a+13cos^2a=7;4)Найти tga,если 5sina+4cosa-2/5sina+2cosa-6=1/3;5)найти 98cos2a, если cosa=6/7.
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