Question

(sin 0 + cos O)2 = 1 + 2 sin e.cos e​

Answer 1

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(Sin ○+Cos ○)² = 1+2sin○+cos○

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▪︎ (a+b)² = a²+b²+2ab. ---(1)

▪︎ Sin²○+Cos²○ = 1. ---(2)

${\large{\blue{\bold{\underline{Proof:-}}}}}$

▪︎ By taking LHS,

=》 (sin ○+cos○)²

=Sin²○+Cos²○+2Sin○Cos○.

{From ID(1)}

= 1 + 2sin○Cos○

{From ID(2)}

= RHS.

HENCE PROVED.

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Answer 2

1 is the answer....

Thanks .......