5 x 1.4 = 7
I hope this helped you out!
The awnser issss d!!!!!!!!
=> The first expression on the left: (1 + tan²)
we know that tangent = sin/cos
so tan² = sin²/cos²
the expression is <u>(1 + sin²/cos²)</u>
=> The second expression on the left: (1 - sin²)
we know that (sin² + cos²) = 1
subtract sin² from each side,
and we have (1 - sin²) = (<u>cos²)</u>
=> Multiply the massaged form of the two expressions:
(1 + tan²) (1 - sin²) = (<u>1 + sin²/cos²)</u> (<u>cos²)</u> = (cos² + sin²) = <em>1 </em>qed
<u> </u>
Answer:
11
Step-by-step explanation:
-(-7)^2 + (6*-7) + 4
7^2 + (-42) + 4
49 - 42 + 4 = 11
About what functions? You should take a photo of your work!
