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 ( 44+ )
Otras preguntas
f(x) = 3x^2 - 4x Find f(2).
How many electoral votes are needed to become president
Length intensive or extensive
You buy 13 gallons at p dollars per gallon and pay $29.25. Write an equation to find the price of one gallon of gasoline. Then find the price of one gallon of g
how do you say "the lesson" in spanish
For two months, the Senate debated what executive department should run the Freeman’s Bureau. What reasons were given in support of granting oversight to the De
Without dividing, select the number that is divisible by 3. Select one: A. 1036 B. 1125 C. 1571 D. 2045
Let N+2 denote the natural numbers greater than or equal to 2. Let mRn if gcd(m, n) > 1. The binary relation R on N2 is (a) Reflexive, Symmetric, Not Transit
An aluminum pan whose thermal conductivity is 237 W/m⋅K has a flat bottom with diameter 15 cm and thickness 0.4 cm. Heat is transferred steadily to boiling wate
A team of researchers is investigating a new carbon-rich molecule important to life. They find evidence for the presence of both cis and trans isomers of the mo
