Question

A stone takes 5.4 seconds to fall from the top of a cliff. The cliff is ________ meters high.

Answer 1

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122.5 m

Answer 2

Explanation:

5

If cos .=

3

and cos ß =

5

then which of the following is not possible ?

13

-33

-33

2) sin(a+B) =

1) cos(a +B) =

65

65

63

1

3) sin(a. – B)=

4) cos(a - b) =

65

65