cos(a - b) - cos(a + b) = 2sin(a)sin(b)
[cos(a)cos(b) + sin(a)sin(b)] - [cos(a)cos(b) - sin(a)sin(b)] = 2sin(a)sin(b)
[cos(a)cos(b) - cos(a)cos(b)] + [sin(a)sin(b) + sin(a)sin(b)] = 2sin(a)sin(b)
2sin(a)sin(b) = 2sin(a)sin(b)
Answer:
AB=24cm and BC=6cm
Step-by-step explanation:
Answer:
B. X = 76, y = 63, z = 104
Step-by-step explanation:
Value of x is 140
Tangent are present that means those angles are of 90° and 90° + 90° = 180°
One angle is already given 40°
By angle sum property of Quadrilateral
We can get its value
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