Trikonasana
Tones up the leg muscles
Removes stiffness in the legs and hips
Relieves backache, strengthens the ankles and develops the chest
Vrikshasana 
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Improves neuro-muscular coordination, endurance and alertness It tones the leg muscles and gives one a sense of balance and poise
Konasana
Relieves backache
Ailments of the lungs are cured
It can be practiced for the first six to seven months of pregnancy
Strengthens the pelvic area and tones the reproductive organs
Parivrita Trikonasana
Tones the thigh, calf and hamstring muscles
Relieves pain in the back
Invigorates the abdominal organs and strengthens the hip muscles
Tadasana
Develops physical and mental balance
Body becomes well built and proportioned, nimble and agile
Clear up congestion of the spinal nerves
Beneficial in increasing the height