Maharashtra State BoardSSC (English Medium) 9th Standard
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Find the Values of - Geometry

Sum

Find the values of 

cos 60°× cos 30° + sin 60°× sin 30°

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Solution

cos 60°× cos 30° + sin 60°× sin 30°

= `1/2 xxsqrt3/2 + sqrt3/2 xx 1/2`

= `sqrt3/4 + sqrt 3/4`

= `(2sqrt3)/4`

= `sqrt 3/2`

Concept: Method of Using Trigonometric Table
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Balbharati Mathematics 2 Geometry 9th Standard Maharashtra State Board
Chapter 8 Trigonometry
Practice Set 8.2 | Q 2.6 | Page 112
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