Answer: ya correct
Step-by-step explanation:
Answer:
always true
Step-by-step explanation:
simplify (5+4)3
add 5 and 4.
multiply9 and 3= 4(3) + 5(3)
27=12+15
Answer:
Opposite angles are right angles.
Step-by-step explanation:
There are no right angles in a parallelogram.
Answer:
-1/2
Step-by-step explanation:
Im not going to go into detail about how to compute sin30 and cos 30, but know that sine and cosine are just the ratios between the sides of a 30-60-90 triangle with a hypothenuse of 1.
With that being said:
sin^2 30 - cos^2 30
= (1/2)^2 - ((sqrt3)/2)^2
= 1/4 - 3/4
= -1/2
