Question

if sinA +cosA=√2cosA, show that cotA=√2+1​

Answer 1

Answer:

Hey ❤️

Divide whole eq. By cosA

We get,

$\frac{ \sin(a) }{ \cos(a) } + \frac{ \cos(a) }{ \cos(a) } = \sqrt{2} \frac{ \cos(a) }{ \cos(a) }$

$\tan(a) + 1 = \sqrt{2} \\ \tan(a = \sqrt{2} - 1$

CotA=1/root2 - 1

Now rationalise to get cotA value

#Bebrainly ❤️

Answer 2

Answer:

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Step-by-step explanation:

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