Answer:
its the third one 60,60,60 angles in a triangle add up to 180 degrees 60+60+60=180
Not sure if it’s right.. hope it helps
Answer:
A
Step-by-step explanation:
A is equivalent because it has the same terms giving 12 but the sign has changed. According to sign rules for integers, +/- or -/+ both give a - answer. So -12 results from both.
Answer:
the answer is the letter a) -sin x
Step-by-step explanation:
Simplify the expression.
sine of x to the second power minus one divided by cosine of negative x
(1−sin2(x))/(sin(x)−csc(x))
sin2x+cos2x=11−sin2x=cos2x
cos2(x)/(sin(x)−csc(x))csc(x)=1/sin(x)cos2(x)/(sin(x)− 1/sin(x))= cos2(x)/((sin2(x)− 1)/sin(x))sin2(x)− 1=-cos2(x)cos2(x)/(( -cos2(x))/sin(x))
=-sin(x)
Answer:
C. 56.25π
Step-by-step explanation:
Circumference=15π=πd⇒d=15
Area=πr^2⇒r=d/2⇒r=7.5⇒π7.5^2=56.25π