Math, asked by annepuuday111, 1 year ago

if sin² 18° -cos²72°=?

Answers

Answered by vivekkumar6560

1

Answer:

0

Step-by-step explanation:

sin^218°=sin^2(90-72)=cos^272°

Answered by Anonymous

0

${\green {\boxed {\mathtt {✓verified\:answer}}}}$

we have,

sin18²-cos²(90⁰-1⁰)

=sin²18⁰-sin²18⁰

=0

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