Question

sin²30+sin45⁰+cos²45⁰+sin²60=2.​

Answer 1

Step-by-step explanation:

sin 30° = 1/2 => sin²30° = 1/4

sin 45° = 1/√2 => sin²45° = 1/2

cos 45° = 1/√2 => cos²45° = 1/2

sin 60° = √3/2 => sin²60° = 3/4

now sin²30° + sin² 45° + cos²45° + sin²60°

=> 1/4 + 1/2 + 1/2 + 3/4

=> 2

LHS = RHS

hence proved

Answer 2

Answer:

2

Step-by-step explanation:

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