EVALUATE THE FOLLOWING EXPRESSION WITHOUT USING TRIGONOMETRIC TABLES-
cot 30/ sec 30+ cosec 30/ tan 45 - cos2 45
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We have cot30/sec30 + cosec30/tan45 - (cos45)^2
•) Now we have to find the value of the given equation .
•) Now we have,
cot30/sec30 + cosec30/tan45 - (cos45)^2
= √3 / (2/√3) + 2/1 - (1/√2)^2
= 3/2 + 2 - 1/2
= 1.5 + 2 - 0.5
= 3
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