3tg p/4+2sin3p/4-cos (p/2+30°)

Решение 3tg p/4+2sin3p/4-cos (p/2+30°) = 3*1 + 2*sin( π - π/4) + sin30° = = 3 + 2sin(π/4) + 1/2 = 3,5 + 2*(√2/2) = 3,5 + √2