Functions of angles in all quadrants in terms of those in quadrant 1

-A

90^{0} ± A P/2 ± A

180^{0} ± A P ± A

270^{0} ± A 3P/2 ± A

360^{0} ± A 2P ± A

sin

-sinA

cos A

±sin A

-cosA

±sin A

cos

cos A

±sin A

-cos A

±sin A

cos A

tan

-tan A

±cot A

± tan A

±cot A

±tan A

csc

-csc A

sec A

± csc A

-sec A

±csc A

sec

sec A

± csc A

-sec A

±csc A

sec A

cot

-cot A

± tan A

± cot A

±tan A

± cot A

Q 1: Find the angle in radian through which a pendulum swings if its length is 75 cm and the tip describes an arc of length 15 cm 1/3 1/5 2/5

Q 2: A wheel makes 360 revolutions in one minute. Through how many radians does it turn in one second? 12 4/6 5/3

Q 3: In triangle ABC b = 4, c = 6, B = 30^{o}, find sin C. 3/4 1/2 4/3

Q 4: In triangle ABC, a = 50, c = 60, b = 100 degrees, find b. 85 80 84.5

Q 5: Find the angle in radian through which a pendulum swings if its length is 75 cm and the tip describes an arc of length 10 cm 4/15 3/15 2/15

Q 6: A vertical flagstaff stands on a horizontal plane from a point distant 150 metres from its foot, the angle of elevation of its top is found to be 30^{o}, find the height of the flagstaff. 113.4 metres 100.4 metres 100 metres

Q 7: The horizontal distance between two towers is 60 metres and the angular depression of the top of the first as seen from the top of the second, which is 150 metres is 30^{o}. Find the height of the first. 100 metres 115.36 metres 120 metres

Q 8: In triangle ABC, a= 15 cm, B = 68 degrees, C = 43 degrees, find b, c and B. A = 60 degrees, b = 4 cm, c = 9 cm A = 69 degrees, b = 4.89 cm, c = 10.96 cm A = 60 degrees, b = 3 cm, c = 7 cm

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Question 10: This question is available to subscribers only!