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Sin5θ-sin7θ+sin8θ-sin4θ / cos4θ-cos5θ-cos8θ+cos7θ=cot6θ solution

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Sin5θ-sin7θ+sin8θ-sin4θ / cos4θ-cos5θ-cos8θ+cos7θ=cot6θ solution

10 Tips for Better Sleep

2:34

10 Tips for Better Sleep

The world first artificial womb facility “Ectolife”

17:49

The world first artificial womb facility “Ectolife”

Class 10 Compulsory Mathematics IMPORTANT FORMULAE

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Class 10 Compulsory Mathematics IMPORTANT FORMULAE

Trigonometric solution

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Trigonometric solution

#cosA-sinA/cosA+sinA=sec2A-tan2A #tan(π/4+A)- tan(π/4-A)=2tan2A #trigonometry

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#cosA-sinA/cosA+sinA=sec2A-tan2A #tan(π/4+A)- tan(π/4-A)=2tan2A #trigonometry

Sin5A/sinA-cos5A/cosA= 4cos2ASin4A/cos2A x 1-cos2a/1-cos4A=tanA1+sin2A/1-sin2A=(1+tanA/1-tanA)^2

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Sin5A/sinA-cos5A/cosA= 4cos2ASin4A/cos2A x 1-cos2a/1-cos4A=tanA1+sin2A/1-sin2A=(1+tanA/1-tanA)^2

1+sec2A/tan2A=cotA #(1-sin2A-cos2A)/(1+sin2A+cos2A)=tanA #Cos^3 20+ sin^3 10 =3/4(cos20+sin10)

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1+sec2A/tan2A=cotA #(1-sin2A-cos2A)/(1+sin2A+cos2A)=tanA #Cos^3 20+ sin^3 10 =3/4(cos20+sin10)

Cos2A/1+sin2A= (1-tanA)/(1+tanA) and more check detail

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Cos2A/1+sin2A= (1-tanA)/(1+tanA) and more check detail

Cot10-√3=4cos10 Solution

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Cot10-√3=4cos10 Solution

tan4A+tan2A=Sec4A & (1-sec2A/cos2A=sec2A-tan2A)

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tan4A+tan2A=Sec4A & (1-sec2A/cos2A=sec2A-tan2A)

cotA-tanA/CotA+tanA= cos2A

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cotA-tanA/CotA+tanA= cos2A

1 /sin10-√3/cos10=4 solution

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1 /sin10-√3/cos10=4 solution

√3 /sin20-1/cos20=4 solution

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√3 /sin20-1/cos20=4 solution

(1+sin2A+cos2A)/(1+sin2A-cos2A)=cotA

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(1+sin2A+cos2A)/(1+sin2A-cos2A)=cotA

Sin^4A=1/8(3-4cos2A+cos4A)

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Sin^4A=1/8(3-4cos2A+cos4A)

cos(45-A)=tan2A+Sec2A solution

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cos(45-A)=tan2A+Sec2A solution