Answer:
<u>a = 60° or π/3</u>
Step-by-step explanation:
<u>Given :-</u>
sin² a/2 - sin a/2 + 1/4
<u>To find :-</u>
a
<u>Solving :-</u>
sin² a/2 - sin a/2 + 1/4 = (sin a/2 - 1/2)² = 0
sin a/2 - 1/2 = 0
sin a/2 = 1/2
a/2 = 30°
<u>Solution :-</u>
<u>a = 60° or π/3</u>
Answer:
A
Step-by-step explanation:
It’s just like adding except with a variable so 5x+3x is like 5+3 except with x so 8x+3=16
Substitute -3 to x
(-3)^2 + 4(-3) + 1
9 - 12 + 1
= -2
If the 8y/4 is the only fraction, the answer is x=7y
If the whole input of the equation is in a fraction, the answer is x=28y
:)
The answer would be 24 pints
