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: If the shadow of a tower is 30 metres, when the sun's altitude is 30^{o}, what is the length of the shadow when the sun's altitude is 60^{o}? 200 metres 240 metres 100 metres

Q 2: From the light house the angles of depression of two ships on opposite sides of the light house are observed to be 30^{o} and 45^{o}. If the height of the light house is 300 metres, find the distance between the ships if the line joining them passes through foot of the light house. 809 metres 819.6 metres 800 metres

Q 3: In triangle ABC, if b = 6, c = 4, cos A = 1/12, find a 4 3^{1/2} 4.3^{1/2}

Q 4: In triangle ABC, a = 8.4 cm, b = 7.6 cm and c = 9.2 cm. Calculate the area of triangle ABC. 30 sq cm 45 sq cm 50 sq. cm

Q 5: Find the radian measure of 15^{o}. /4 /6 /12

Q 6: Find the degree measure of 3/4. 42^{0}57^{l}18^{ll} 45^{o} 35^{o}

Q 7: In triangle ABC b = 4, c = 6, B = 30^{o}, find sin C. 4/3 3/4 1/2

Q 8: 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. 115.36 metres 120 metres 100 metres

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Question 10: This question is available to subscribers only!