C=\(\frac{2a^{2^{ }}sin30^{o^{ }}
+2absin90^{o^{ }}+\left(bcot45^o\right)^2}{\left(acos0^o\right)^2-\left(btan45^o\right)^2}\)
D=\(\frac{\left[tan\left(\alpha-\beta\right)
+sin\alpha\right].2cos\alpha}{cos3\alpha+sin9\beta}\) (α=2β=60o)
E=3cos(150o+α) - 2sin(180o+3α) + 5tan6α+2sinα, với...
Đọc tiếp
C=\(\frac{2a^{2^{ }}sin30^{o^{ }} +2absin90^{o^{ }}+\left(bcot45^o\right)^2}{\left(acos0^o\right)^2-\left(btan45^o\right)^2}\)
D=\(\frac{\left[tan\left(\alpha-\beta\right) +sin\alpha\right].2cos\alpha}{cos3\alpha+sin9\beta}\) (α=2β=60o)
E=3cos(150o+α) - 2sin(180o+3α) + 5tan6α+2sinα, với α=30o
F=(2sin30o+cos135o-3tan150o)(cos180o-cot60o)
G=sin290o+cos2120o+cos20o-tan260o+cot21500
