Answer:
68
Step-by-step explanation:
Use the formula provided...
6 and 11 are b1 and b2, and 8 is h.
So, 6+11 = 17
17/2 = 8.5
8.5*8 = 68
Answer: a) 
b) 1
c) 2
Step-by-step explanation:
(a) sin 17π/6
It is known that the value of sin x repeat after an interval of 
∴ 
[Since the value of sin x is positive in 2nd quadrant]
(b) tan 13π/4
It is known that the value of sin x repeat after an interval of 
∴ 
(c) sec 11π/3


Answer:
A) T is located on (-5, 2); radius = 9 units
Step-by-step explanation:
eqn of circle= (x-a)^2 + (y-b)^2 = r^2
where (a,b) is centre of circle.
(x+5)^2 = (x - (-5) )^2
(y-2)^2 = (y - (2) )^2
(-5,2)
r^2 =81
r = sqrt of 81
r = 9
The answer is 27 (hope this helps you)