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 ( 86+ )
Otras preguntas
I'm not sure about this question. Could anyone help? Geometry.
-50 POINTS- if you guess you’ll be reported. If P=(4,7) Find D2 (P)
While analyzing a data set, a scientist notices one data value that is 2 IQRs below the first quartile. She decides to remove this value from further analysis.
What is an example of substitution method?
Help me please I got 10 minutes
Simplify (with steps please:)) √((x+c)^2 + y^2) = x*a/c + a
What are some of the criteria for IRB approval of research under the common rule?
Write the feature of the constitution of Nepal, 2072 In point
Ms.Metz had her students estimate the length and width of a math book. Dana's estimate was 40cm by 20cm. The book measured 24cm by 16cm. How far off was her est
Sara is saving her money in a piggy bank and counts it each month. The graph shows her monthly savings. Choose any two points and draw a slope triangle. Dilate
