When 2 tangents are joined to a circle, the tangents are of equal length so the triangle is isosceles. Then again it is possible for it to be equilateral.
Answer:
∠ECD is 110°
Step-by-step explanation:
For a cyclic quadrilateral,
∠ABC + ∠AEC = 180°
Therefore ∠AEC = 180° - 45° = 135°
∠CAE + ∠ACE + ∠AEC = 180° (Angles in a triangle)
Therefore ∠CAE = 180 - 20 - 135 = 25°
∠CAE = ∠CDA = 25° (Base angles of isosceles triangle ΔCAD)
∠CED + ∠AEC = 180°(Sum of angles on a straight line)
Therefore ∠CED + 135° = 180°
∠CED = 180° - 135° = 45°
∠ECD + ∠CED + ∠CDA = 180°
Therefore ∠ECD = 180° - (∠CED + ∠CDA)
∠ECD = 180° - (45° + 25°) = 110°
Therefore, ∠ECD = 110°.
Answer:
The ball reaches the maximum height after 1 seconds
Step-by-step explanation:
Given
--- the function missing from the question
Required
Time to reach maximum height
The time (t) to reach maximum height is calculated using:
Where
So, by comparison:
So, we have:
Is there something wrong with the question?
Answer:
1 5/12
Step-by-step explanation:
find the common factor of the denominators (3 and 4) which is 12 then just multiply the 2 in 2/3 by 3 since 12 is the third common factor for 3 and you do the same thing with 3/4, multiply the 3 by 3. then you add 8/12 + 9/12 to get 17/12 then 17 goes into 12 once plus 5 left over so as a mixed number its 1 5/12