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Given, tan A = 1 ⇒ A = 45° Also given, tan B = √ 3 ⇒ B = 60° ∴ cos A . cos B - sin A . sin B = cos 45° . cos 60° - sin 45° . sin 60° = 1/ √ 2 * 1/2 - 1/ √ 2 . √ 3/2 = (1 - √ 3)/2 √ 2
54, 58, 67, 92, 173, 262
7, 22, 68, 207, 620, 1880
7, 27, 10, 32, 17, 37
Find the wrong number in given number series.
2835, 3460, 3335, 3360, 3354, 3356
Find the wrong number in the given number series.
41, 42.7, 46.1, 51.2, 58, 64.7
18, 19, 27, 54, 116, 243
7, 78, 324, 900,1855, 3128
11, 12, 20, 58, 234, 1168