Question

Find the value of:

2 points 3 sin² 45 + 2 cos²60




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Answer 1

Step-by-step explanation:

sin 45° = 1/√2 => sin²45 = (1/√2)² = 1/2

cos 60° = 1/2 => cos²60° => (1/2)² = 1/4

therefore 3 sin²45° + 2 cos²60° =>

3 × 1/2 + 2 × 1/4

=> 3/2 + 1/2

=> 2

Answer 2

Answer:

2

Step-by-step explanation:

sin 45° =1√2

cos 60°=1/2

by substituting the values we get

3×(1/√2)² +2×(1/2)²

3/2+1/2

=4/2

=2

so final answer is 2

hope it hepls