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#### SIMILAR QUESTIONS

Q1

A rail road curve is to be laid out on a circle. What radius should be used if the track is to change direction by 250 in a distance of 40 meters?

Q2

Find the minimum and maximum values of sin2 θ + cos2 θ

Q3

Evaluate: sin (15600).

Q4

Evaluate: cos  (–30300).

Q5
Q6

If sin = 8/17 and cos β = 9/41, find sin (θ + β), cos (θ + β), sin (θ – β) and cos (θ – β), where θ is an obtuse angle and β is an acute angle.

Q7
Q9

The equation (cos p – 1)x2 + (cos p)x +sin p = 0, where x is a variable, has real roots. Then the interval of p may be any one of the following: