Question

Let A=[2Cos60°-2Sin30°]/-Tan45°-Cos30°]andB=[Cot45° Cosec30°]/Sec60° Sin90°]Evaluate AB​

Answer 1

Answer:

[(2 cos 60^@ - 2 sin 30^@),(-tan 45^@ , cos 0^@)][(cot 45^@,cosec 30^@),(sec 60^@,sin 90^@)]`

`= [(2 xx 1/2,-2 xx 1/2),(-1,1),(2,1)][(1, 2),(2,1)]`

`= [(1,-1),(-1,1)][(1,2),(2,1)]`

`= [(1- 2, 2 -1),(-1 + 2, -2 + 1)]`

`= [(-1,1),(1,-1)]`

Step-by-step explanation:

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