Question

prove theat
${sin}^{2} + {cos}^{2} = 1$
​

Answer 1

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Answer 2

Answer:

sin^2+cos^2=1

let sin=30°

=sin^2 30°+cos^2 30°

=(1/2)^2 +(√3/2)^21/4 + 3/4

=4/4

=1

LHS=rhs

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