When did the first spacecraft go into space?nice what's your name?? ​

Answer:

Clovis

Explanation:

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Answer:

If a tree breaks due to storm and the broken part bends so that the top of the tree touches the ground making an angle 30° with it and the distance between the foot of the tree to the point where the top touches the ground is 8 m, then the height of the tree is 8√3 m.

Step-by-step explanation:

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Answer:

Deep within the Earth it is so hot that some rocks slowly melt and become a thick flowing substance called magma. Since it is lighter than the solid rock around it, magma rises and collects in magma chambers. Eventually, some of the magma pushes through vents and fissures to the Earth's surface.

Answer:

cos =b/h

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Step-by-step explanation:

Trigonometric Ratios are defined as the values of all the trigonometric functions based on the value of the ratio of sides in a right-angled triangle. The ratios of sides of a right-angled triangle with respect to any of its acute angles are known as the trigonometric ratios of that particular angle.

Answer:

There is one important fact I want to add. There were no precise clocks in those days, so even with an incline to slow the motion of rolling balls, how did Galileo time the motion?

The answer is amazing. He placed small metal plates on the inclines, so a ball would make a click as it passed each one. He adjusted the plates so the intervals between the clicks were equal, knowing from musicians that our brains are very good at measuring rhythmic beats. When the clicks sounded regular, he measured the plate positions. Result: a graph of position versus time! And he recognized the pattern as quadratic!

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Answer:

perimeter of square = side *side

Perimeter = 40*40

Perimeter = 1600