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#### SIMILAR QUESTIONS

Q1
Q2

In ΔABC, the line joining the circumcentre to the incentre is parallel to BC, then cos B + cos C is equal to

Q4

Find the radian measure corresponding to – 370 30’.

Q5

The minute hand of a clock is 10 cm long. How far does the tip of the hand move in 20 minutes?

Q6

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?

Q7

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

Q8

Evaluate: sin (15600).

Q9

Evaluate: cos  (–30300).

Q10

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.