(1-cot@+cosec@)/(cot@+cosec@+1)

(Sin@-cos@+1)/(cos@+sin@+1)

(2sin(@/2)cos(@/2)+1-cos@)/
(2sin(@/2)cos(@/2)+1+cos@)

((2sin(@/2)cos(@/2)+2sin²(@/2)/
((2sin(@/2)cos(@/2)+2cos²(@/2)

2Sin(@/2)(cos((@/2)+sin(@/2))/
2cos(@/2)(sin(@/2)+cos(@/2))

Sin(@/2)/cos(@/2)

Tan(@/2)

Check your concepts-"Geometry"

Solution of today's problem ...

Check your concepts- "Geometry"(2)
Geometry lovers must try..❤️

Solution - (2)

Check your concepts- Geometry - (3)
Geometry lovers must try..❤️

Solution👆

Check your concepts-Geometry-(4)
Geometry Lovers must try..❤️

Solution-(4)

Total 40 mangoes

(p*p%)+(100-p)%*(40-p)/(40)=Y

2p²-140p+4000/(40)

Y=p²-70p+2000/(20)

dY/dp=0

2p-70=0

p=35

Now p value put in Y

(35²)+(65*5)/(40)

1225+325/(40)

1550/40%

155/4%

40*20=800 rs cp

800*(155/400)=155*2=310 rs profit

tan(x + y) = -tanz

tanx + tany = -tanz + tanxtanytanz

Multiply by Tanz

2 + 18 + tan²z = 36

tan²z = 16

Use half angle formula

2sin((x+y)/2) cos((x-y)/2) = a

2cos((x+y)/2) cos((x-y)/2) = b

tan((x+y)/2) = a/b

cos(x + y) = (1 - a²/b²)/(1 + a²/b²)

= (b² - a²)/(b² + a²)

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