If sinΦ+sin²Φ=1,then prove that cos²Φ+cos4Φ=1.Guys plz help....
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Answered by
3
Here I am writing Ф as a. Because It is difficult to write always.
Given Equation is sina + sin^2a = 1.
sina = 1 - sin^2a.
sina = cos^2a
On squaring both sides, we get
sin^2a = cos^4a.
1 - cos^2a = cos^4a
cos^2a + cos^4a = 1.
Hope this helps!
Given Equation is sina + sin^2a = 1.
sina = 1 - sin^2a.
sina = cos^2a
On squaring both sides, we get
sin^2a = cos^4a.
1 - cos^2a = cos^4a
cos^2a + cos^4a = 1.
Hope this helps!
Answered by
3
hope it's helpful to u...!!!☺☺
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