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CBSE Class 10 Answered

evaluate page 405 cosec2 30° sin 45° - sec2 60° sin 60°    + 5 cos 90° - cot 30°              tan 45°         sin 30° + cos 30°              tan 60°         sec 60° + cosec 60° 5 sin2 30° + cos2 45° +  4 tan2 60° 2 sin 30° cos 60° + tan 45°
Asked by miniprasad | 23 Oct, 2018, 09:56: PM
answered-by-expert Expert Answer
begin mathsize 16px style cosec squared 30 degree sin 45 degree minus sec squared 60 degree equals 2 squared cross times fraction numerator 1 over denominator square root of 2 end fraction minus 2 squared space space space space space space space space space space space space space space space space space space space space space space space space space space cosec space 30 degree equals 2 comma sin 45 degree equals fraction numerator 1 over denominator square root of 2 end fraction comma sec space 60 degree space equals 2 equals fraction numerator 4 over denominator square root of 2 end fraction minus 4 equals fraction numerator 4 over denominator square root of 2 end fraction cross times fraction numerator square root of 2 over denominator square root of 2 end fraction minus 4 equals fraction numerator 4 square root of 2 over denominator 2 end fraction minus 4 equals 2 square root of 2 minus 4 equals 2 open parentheses square root of 2 minus 2 close parentheses end style
Answered by Sneha shidid | 24 Oct, 2018, 10:31: AM

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CBSE 10 - Maths
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