EXERCISES 4 (a)
state which of the following are positive and how?
(i) cos 271
(ii) sec 73°
(iv) cosec 159°
sec 199°
(vi) cos 315º (viii) Co 375°
(ii) sin 302
(vi) cosec 126
LC.
trigonometric ralios of some acute⁸
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Answer:
cos 271= cos 270+1=cos 3x90+1 => positive as it lies in 4th quadrant
sec 73 is positive as it lies in first quadrant
and so on
Step-by-step explanation:
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