Question

5 cos square 60 + 4 sec square 30 minus 10 square 45 whole divided by cosec 30 - tan 45​

Answer 1

Answer:

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Step-by-step explanation:

We know that, cos 30° = √3/2 ⇨ cos2 30° = 3/4 cos 60° = 1/2 ⇨ cos2 60° = 1/4 sec 30° =(2/√3) ⇨ sec2 30° = 4/3 tan 45° = 1 ⇨ tan2 45° = 1 sin 30° = 1/2 ⇨ sin2 30° = 1/4 Now, (5cos260°+4sec230°-tan245°)/(sin230°+cos230°) Read more on Sarthaks.com - https://www.sarthaks.com/711173/evaluate-5cos-2-60-4sec-2-30-tan-2-45-sin-2-30-cos-2-30