Question

Answer please
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Answer 1

Answer:

to evaluate (5 cos² 60 + 4 sec² 30 - tan² 45)/sin²30 + cos²30

cos 60 = 1/2 => cos²30 = 1/4

sec 30 = 2/√3 => sec²30 = 4/3

tan 45 = 1 => tan²45 = 1

sin 30 = 1/2 => sin²30 = 1/4

cos 30 = √3/2 => cos²30 = 3/4

by substituting these values, we get

(5*1/4 + 4*4/3 - 1)/ (1/4 + 3/4)

=> (5/4 + 16/3 - 1)/1

=> (5/4 + 16/3 - 1)

=> (15 + 64 - 12)/12

=> 67/12

Answer 2

Step-by-step explanation:

Refer to the attachment dear....