Question

Cos²8° + sin²8°-1 срочнооооооооооо

Answer 1

Ответ:

cos²8° + sin²8°-1= 1-1= 0

Answer 2

Sure, let's solve the expression:

cos²(8°) + sin²(8°) - 1

Remember the trigonometric identity: cos²(θ) + sin²(θ) = 1

So the expression simplifies to:

1 - 1

Which results in:

0

Therefore, the value of the expression is 0.