I believe the answer is B.
2nd one maybe I’m not to sure srry
Answer:
sin^2α
Step-by-step explanation:
I will just pose x instead of alpha here to make things simpler

we know that sin^2x = 1 - cos^2x so...


we can rewrite using trigonometric identities (tan = sin/cos)...

Answer:
C is greater
D is less
Step-by-step explanation:
Answer:
KL=2
Step-by-step explanation:
JK+KL=JL
3x+x+1=5
4x=5-1
4x=4
x=1
KL=x+1
KL=2