There's no dividing the angle in half in the trig triangle area formula.
Area = (1/2) ab sin C = (1/2) ac sin B = (1/2) bc sin A
Answer: check second and third choices
Answer:
c
Step-by-step explanation:
1/3 hours 1/5 hours 4/6 hours
Answer:
Step-by-step explanation:
length = l ;width = w
Perimeter of rectangle = sum of all sides
= l + w + l +w
= 2l + 2w
= 2*(l +w )
Answer:
3 sin(41t) - 3 sin(t)
Step-by-step explanation:
The general formula to convert the product of the form cos(a)sin(b) into sum is:
cos(a) sin(b) = 0.5 [ sin(a+b) - sin (a-b) ]
The given product is:
6 cos(21t) sin(20t) = 6 [ cos(21t) sin(20t) ]
Comparing the given product with general product mentioned above, we get:
a = 21t and b = 20t
Using these values in the formula we get:
6 cos(21t) sin(20t) = 6 x 0.5 [ sin(21t+20t) - sin(21t-20t)]
= 3 [sin(41t) - sin(t)]
= 3 sin(41t) - 3 sin(t)
Therefore, second option gives the correct answer
