Math, asked by Anonymous, 4 months ago

What is (sin x + sin 3x)/(cos x + cos 3x) ?

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Answered by Anonymous

1

Answer:

=(sin7x+sinx) +sin4x =sin(4x+ 3x) +sin(4x-3x) +sin4x so by using: sin(A+B) + sin(A-B) =2sins. cosB 2sin4x.cos3x+sin4x

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Answered by Anonymous

4

$\huge\star\bold\blue{Heya!}$

$\frac{sin \: x + \: sin3x}{sine + cos \: 3x} = tan \: 2x \: answer$

Hope it's helpful for you...

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