Can someone pls help me with this?
2 answers:
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Answer:
Answer is 60 degrees.
Step-by-step explanation:
We know that in a right angled triangle if one leg is 1, and hypotenuse is 2,
then other leg =
(By using Pythagorean theotrem)
Now consider a right angle triangle with hypotenuse 2 and one leg 1, and the angle between other leg and hypotenuse.
Since sin 30 = 1/2 we have cos 60= sin (90-60) = 1/2
Hence sin 60 = rt 3 /2
Using the above we get sin inverse of quantity square root of three divided by two is 60 degrees.
Solve liek a normal equation, except when you divide or muliply by a negative, flipi the sign direction
10.
divide both sides by -3
flip sign
p-7≤-7
add 7 to both sides
p≤0
so put a circle at 0 and shade it in and shade to the left and draw an arrow there (see attachment)
12.
times both sides by 15
-9+a>15
add 9 to both sides
a>24
put an open circle at 24 and go to the right (see attachment)
10.
divide both sides by -3
flip sign
p-7≤-7
add 7 to both sides
p≤0
so put a circle at 0 and shade it in and shade to the left and draw an arrow there (see attachment)
12.
times both sides by 15
-9+a>15
add 9 to both sides
a>24
put an open circle at 24 and go to the right (see attachment)