Question

Find the value of: 2(cos^4 60 degree+ sin^4 30 degree) - (tan^ 60 degree- cot^2 45 degree) + 3sec^30 degree? ​

Answer 1

answer

Step-by-step explanation:

cos 60 degrees is 1/2 and sin 30 degree is 1/2 and tan 60 degree is √3 and cot 45 degree is 1 and sec 30 degree is 2/√3.

2( (1/2)^4 + (1/2)^4 ) -((√3)^2 -1) + 3(2/√3)^2

2( 1/16 + 1/16) - 3+1 +4

2(1/16) +(1/16) -3+1 +4

2(2/16) -4+4

4/16

=1/4

Answer 2

Answer:

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