Question

30) Evaluate the following:
5 cos 60° + 4 sec? 30°-tan2 45° / sin? 30° + cos2 60.​

Answer 1

Step-by-step explanation:

5cos260+4sec230−tan245

⇒(21)2+(23)25(21)2+4(32)2−(1)2

⇒41+4345+316−1

⇒4445+316−1

⇒123+64=1267

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