Log4(a^2) = 8
2log4(a) = 8
log4(a)=4
a=4^4
теперь наш логарифм:
log2(a) = log2(4^4) = log2(2^8)= 8log2(2) = 8
Вот так)))))))))))))))))))))
A10 = a1 +9d, следовательно d = a10-a1/9 = 92 - 2/9 = 10
<span>Cos2а=0,2</span><span>
Cos^2a=(1+Cos2a)/2=(1+0.2)/2=0.6 <u>Cosa=√0.6</u></span><span>
Sin^2a=1- Cos^2a
=1-0.6=0.4 <u>Sina= √0.4</u></span>
tga= Cos^a/
Sin^a= √1.5