Question

$prove \: that \: {sin}^{2} + {cos}^{2} = 1$
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Answer 1

Answer:

let sin = p/h and cos = b/h then sum and square this it gives you your answer

Answer 2

Hi !

Solution :-

from LHS ;

sin²¢ + cos²¢

as we know that, sin¢ = p/h

and , cos¢ = b/h

since, sin²¢ = p²/h² and cos¢ = b²/h²

sin²¢ + cos²¢ = p²+b²/h²

and by Pythagoras theorem .p²+b²= h² we

already know

so, h²/h² = 1 RHS

LHS = RHS proved

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Hope it's helpful