Question

Question Given in Attachment Please. Thank You . Will Mark You Brainliest as soon as i get the answer earliest.

Answer 1

Answer:

2 cos² 45 + 2 sin² (90+45) +2 sec²60

2*1/2 + 2 √2²/2² +2*2²

1+ 1 +8

= 10

Step-by-step explanation:

formula used sin a+b = sin a cos b + sin b cos a

Answer 2

Step-by-step explanation:

LHS :

2cos^2 π/4 + 2sin^2 3π/4 + 2sec^2 π/3

= 2 cos^2 45 + 2sin^2 135 + 2sec^2 60

cos 45 = 1/√2 , sin 135 = 1/√2 , sec 60 = 2

= 2 (1/√2)^2 + 2(1/√2)^2 + 2(2)^2

= 2 × 1/2 + 2 × 1/2 + 2 × 4

= 1 + 1 + 8

= 10

= RHS

Hope this helps