Question
If tan A = 1 and tan B = β 3, what is the value of cos
A . cos B - sin A . sin B?Solution
Given, tan A = 1 β A = 45Β° Also given, tan B = β 3 β B = 60Β° β΄ cos A . cos B - sin A . sin B = cos 45Β° . cos 60Β° - sin 45Β° . sin 60Β° = 1/ β 2 * 1/2 - 1/ β 2 . β 3/2 = (1 - β 3)/2 β 2
Column (1)
Column (1)
In the following questions, you will find two columns containing three sentences each. Column 1 consists of sentences A, B, and C, with one blank in on...
Column (1)
Column (2)
(A) The Tourism Department had also
(D) for devotees taking the trek route.
(B) In a well coo...
Match Column I and Column II and choose the correct match from the given choice
Column (1)
In each of the following questions, two columns are given containing three sentences/ phrases each. A sentence or phrase from the first column may or m...
Column (1)
In the following questions two columns are given containing three Sentences/phrases each. In first column, sentences/phrases are A, B and C and in the ...
Match Column I and Column II and choose the correct match from the given choice
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