haileyw315
haileyw315
10-06-2016
Mathematics
contestada
cos2a=1-2sin^2a for all values of a.
Respuesta :
nobillionaireNobley
nobillionaireNobley
16-06-2016
[tex]cos2a= cos^{2} a- sin^{2} a \\ but \ cos^{2} a + sin^{2} a=1 \\ i.e. \ cos^{2} a=1- sin^{2} a[/tex]
Therefore,
[tex]cos2a=1- sin^{2} a- sin^{2} a \\ =1-2 sin^{2} a[/tex]
Answer Link
turanganik
turanganik
30-07-2018
true (just did this on apex)
Answer Link
VER TODAS LAS RESPUESTAS ( 26+ )
Otras preguntas
please help me correct the right choice so that the pronouns agree with the antecedents.1- Each of the horses stood on ( its, their ) hind legs.2) Neither Bob n
The length of a side of a square is . If the area of the square is 12, find x.
Which set of points are on the line y=2x-3? (0,-3),(1,2) (0,-3),(2,1) (-3,0),(1,2) (-3,0),(2,1)
Even if I have use bidmas I'm still confuse with this equation (-7i)(2+i)+(2i)(-7i)
A glacier that covers a wide area is a _______ glacier.
please help me correct the right choice so that the pronouns agree with the antecedents.1- Each of the horses stood on ( its, their ) hind legs.2) Neither Bob n
find the zeroes of the polynomial f(x)=4√3x²+5x-2√3,and verify the relationship between the zeroes and its co-efficients
during the 1820s, political leaders realized that there was a direct correlation between education and the stability of the nation. True or False
Even if I have use bidmas I'm still confuse with this equation (-7i)(2+i)+(2i)(-7i)
A glacier that covers a wide area is a _______ glacier.
