Answer:
-27
Step-by-step explanation:
Answer:
Step-by-step explanation:
I think you have the question incomplete, and that this is the complete question
sin^4a + cos^4a = 1 - 2sin^2a.cos^2a
To do this, we can start my mirroring the equation.
x² + y² = (x + y)² - 2xy,
This helps us break down the power from 4 to 2, so that we have
(sin²a)² + (cos²a)² = (sin²a + cos²a) ² - 2(sin²a) (cos²a)
Recall from identity that
Sin²Φ + cos²Φ = 1, so therefore
(sin²a)² + (cos²a)² = 1² - 2(sin²a) (cos²a)
On expanding the power and the brackets, we find that we have the equation proved.
sin^4a + cos^4a = 1 - 2sin^2a.cos^2a
678.58 that is the surface area to this problem
Answer:
ytg4f3udy2iujsjwrhubygjrkgthjeyiulk4g;5tpyoih5jeklg5g45h5y4mjtgrety87gi3h4h5gt4f526h37uj65y
Step-by-step explanation:
Answer:
19$
Step-by-step explanation:
Because 19$ 20% off=15.20 and you added taxes]
Have a great day :}
