Question

4 (sin²60 -cos²45)-3(tan²60-tan²45)+5(cot²45)​

Answer 1

Answer:

Sin 60 = root 3/2

cos 45 = root 3/2

tan 60 = root 3

tan 45 = 1

cot 45 = 1

Step-by-step explanation:

4 (sin²60 -cos²45)-3(tan²60-tan²45)+5(cot²45)

= 4 (root 3/2 - root 3/2) -3 (root 3/2 - 1) +5( 1 )

= 0 - 3 (3/2 - 1/2) +5

= -3 +5

= 2