Question

please answer with correct explanation ​

Answer 1

$\bold\red{\underline{\underline{Answer}}}$

$\bold\purple{\underline{\underline{Using \ cosine \ direction \ rule}}}$

$\bold\pink{\underline{\underline{Formula:Cos x=a/root(a^2+b^2+c^2)}}}$

$\bold\orange{\underline{\underline{Here \ a=5 \ b=-3 \ c=4}}}$

$\bold\blue{\underline{\underline{Substituting \ values \ we \ get}}}$

$\bold\purple{\underline{\underline{Cos x=5/root(5^2+(-3)^2+4^2)}}}$

$\bold\red{\underline{\underline{Cos x=5/root50}}}$

$\bold\green{\underline{\underline{Cos x=1/root2}}}$

$\bold\pink{\underline{\underline{x=45°}}}$

$\bold\orange{\underline{\underline{Answer=option (A)}}}$

$\bold\red{\underline{\underline{hope \ it \ helps}}}$

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