Question

cot 30
-
- 2 cos 60° sec- 45° - 4 sec? 30°
4
13. (cos 0° + sin 45° + sin 30°)(sin 90° - cos 45º + cos 60°)
usin 30º – sin 90° + 2 cos 0°
4​

Answer 1

Answer:

cot230∘−2cos260∘−43sec245∘−4sec230∘

=(3)2−2(21)2−(43)(2)2−4(32)2

=3−42−46−316

=412−42−46−316

=(4

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