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 10 cm 2/15 4/15 3/15

Q 2: 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

Q 3: Solve the triangle ABC given that A = 67^{o}, b = 3 cms, c = 2 cms. a = 5 cm, B = 70^{o}19^{l}, C = 39^{o} 41^{l} a = 2 cm, B = 73^{o}C = 39^{o} 41^{l} a = 2.88 cm, B = 73^{o}19^{l}, C = 39^{o} 41^{l}

Q 4: The angle of elevation of the top of a tower from a point 60m from its foot is 30^{o}. Find the height of the tower. 20 m 203^{1/2} m 100 m

Q 5: In triangle ABC , if 2 cos A/a + cos B/b + 2 cos C/c = a/bc + b/ca. find angle A 30 degrees 45 degrees 90 degrees

Q 6: Given cos T = 3/5, calculate the value of sin T, tan T. Answer:

Q 7: The sines of the angles of a triangle are in the ratio of 4:5:6, find the ratio of the cosines of the angles. 2:3:4 4:5:2 12:9:2

Q 8: Find the radian measure corresponding to -37^{o}30^{l}. -5/8 -5/24 -5/4

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