Simplify (cos20°+sin 20°) /(cos20°-sin20°)
(cos 20°+sin 20°) / (cos 20°-sin 20°) [(cos 20°+sin 20°)/cos 20°] / [(cos 20°-sin 20°)/cos 20°] = (1+tan 20°)/ (1-tan 20°) Put tan 45° in place of 1. = (tan45°+tan 20°)/(1-tan 20°×tan 45°) Using the tangent addition formula: tan(a+b) =(tanA+tanB)/ (1-tanA.tanB) =tan (45°+20°) =tan (65°)
If A denotes ‘+’, B denotes ‘×’, C denotes ‘−’, and D denotes ‘÷’, then what will be the value of the following equation?
22 ...
82 is related to 41 following a certain logic. Following the same logic, 94 is related to 47. To which of the following is 66 related following the same...
‘A = B’ means ‘A is the father of B‘.
‘A $ B’ means ‘A is the sister of B’.
‘A * B’ means ‘A is the mother of B‘.<...
Select the option that is related to the third letter-cluster in the same way as the second letter-cluster is related to the first letter-cluster.
<...Which two numbers should be interchanged to make the given equation correct?
15 × 20 + 30 ÷ 10 – 12 = 163
If 10th May of a given year is Monday, what day of the week will be 11th July of the same year?
Select the word pair in which the two words are related in the same way as the two words in the following word-pair.
Circle : Figure
Change the question mark with the option that follows the applied logic in the first pair.
Tea : Drink :: Vegetable: ??
Select the option that is embedded in the given figure as its part (rotation is NOT allowed).
During lunch break, eight colleagues, namely A, B, C, D, E, F, G and H are sitting in a circle facing the centre at equal distances. B is an immediate n...
