sec ^2 30 - tan ^2 60 + 3cos^2 30 -2cos0 + 3sin90 evaluate
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Answer:
The answer is 19/12.
Step-by-step explanation:
The value of sec 30 is 2/root 4
the value of tan 60 is root 3
the value of cos 30 is root 3/2
the value of sin 90 is 1
the value of cos 0 is 1
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