Question

If cotA=3/4 find the value of sinA+cosA
SinA-cosA

Answer 1

Step-by-step explanation:

hi wig dB though fvf survival fun forced hp p or CNN is so

Answer 2

Answer:

sinA+cosA = 7/5

and sinA-cosA = 1/5

Step-by-step explanation:

given cot A = 3/4

ie, adjacent side / opposite side = 3/4

=> adj = 3 & opp = 4

∴ hyp = $\sqrt{opp^{2}+adj^2 }$

         = $\sqrt{4^{2} + 3^{2} }$

         = $\sqrt{16+9} = \sqrt{25}$

         = 5

∴ sin A = opp/hyp = 4/5

& cos A = adj/hyp = 3/5

so, sinA+cosA = (4/5)+(3/5) = 7/5

and sinA-cosA = (4/5)-(3/5) = 1/5