Question

If sina-cosa=0 then find the value of sin^4a+cos^4a

Answer 1

$\large{Solution}$

★Given:-

SinA = CosA= 0

=>SinA=CosA

=> SinA/CosA=1

=> tanA=1

=> tanA=tan45°

=>A=45°

Therefore,

=>Sin⁴A+Cos⁴A

=>Sin⁴45°+Cos⁴45°

=>(1/√2)⁴+(1/√2)⁴

=>1/4 + 1/4

=> 2/4

=>1/2

Answer 2

Answer:

1/2 is the answer. Mark as brilliant