Tami thought that the perimiter is length plus width, which gave her 100. The actual width is 20
Answer:
Answer 5 1/4
Step-by-step explanation:
Answer:
It is an identity, the proof is in the explanation
Step-by-step explanation:
csc(A)-cot(A)=tan(A/2)
I'm going to start with right hand side
tan(A/2)=(1-cos(a))/(sin(a)) half angle identity
tan(A/2)=1/sin(a)-cos(a)/sin(a) separate fraction
tan(A/2)=csc(a)-cot(a) reciprocal and quotient identities
B. triangle ABC is isosceles. The angles add up 180 degrees.
Answer:
isn't it 28
Step-by-step explanation: