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The magnetic flux (Φ) through a coil is given by the formula Φ = B * A * cos(θ), where B is the magnetic field strength, A is the area of the coil, and θ is the angle between the magnetic field vector and the area vector (which is normal to the plane of the coil).Given: B = 1.15 T, A = 0.45 m2. The plane is inclined at 60° to the magnetic field, so the angle θ between the normal to the plane and the magnetic field is 90° - 60° = 30°.Φ = 1.15 T × 0.45 m2 × cos(30°)Φ ≈ 1.15 × 0.45 × 0.866Φ ≈ 0.448 Wb.Among the options, 0.45 (assuming Wb units instead of Wb/m2 which is an incorrect unit for flux) is the closest numerical value.