Math, asked by pratheeksha2, 5 months ago

5 cos²60° 4 sec²30°- tan² 45°

Answers

Answered by chinmaya44

1

Step-by-step explanation:

5cos^260°4sec^230°-tan^245°

=5(1/2)^2× 4(2/root 3)^2-(1)^2

=5×1/4×4×4/3-1

=5/4×16/3-1

=(15+64-12)/12

=67/12

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