Question

The value of $2cos^{2}$ 60° + $2sin^{2}$ 45° - $3sin^{2}$ 30°+ $2cos^{2}$ 90° =

a) 1

b) 5

c) 5/4

d) None of the Above


With solution please.

Answer 1

Answer:

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Answer 2

Step-by-step explanation:

2×(1/2)^2 - 3×(1/2)^2 + 2×(1/√2)^2 + 2× 0

= 2×1/4-3×1/4+2×1/2

= 1/2+1-3/4

=3/2-3/4

= 3/4