If |A+B| = |A| + |B|, then angle between A and B will be (a) 90 (b) 120 (c) 0 (d) 60

[@heart_of_goblin]

√a²+b²+2ab cos theta = a+b A²+b²+2ab cos theta= a²+b²+2ab 2ab(cos theta -1)= 0 Cos theta-1= 0 Cos theta = 1 Theta = 0

[@vishwajeetjagtap5722]

cos theta - 1 kaise aaya

[@NandaniSingh-hq8lp]

But it's answer is coming 60° then how your answer came 0°

[@SreedharRudrapaka]

sir yee bahut saare books mai 120 diya hai answer, to glt kya hai?

[@snehagogoi2460]

Thanku so much sir 😊

[@SahilRajput-b9z]

2AB Costheta = 2AB Then , Cos theta = 0

[@TenorEditzz]

2AB.cosθ = 2AB cosθ = 2AB/2AB Then. cosθ = 1 ✅✅ And θ = 0° Not cosθ = 0 ❌❌

[@Lavanyavadnal123]

Thank u sir very much

[@ReetaPatel-y3t]

Thanks sir

[@tanishqmongia9333]

Thanks 🙏

[@krishnamaari987]

Sir cos 0 = 90°

[@Gauri2907]

Thnkuh sir♥️

[@shewkumaryadav1143]

answer is 120 ....

[@RizwanGamer0327]

Yes

[@malinasarkar954]

How can please exclaim

[@SohanSingh-rs1ff]

No 0 is ans

[@bhagyarani1991]

How 😒

[@SohanSingh-rs1ff]

​@@bhagyarani1991why not 0?😅

[@adarshpatel5988]

Wrong answer ⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️ Correct answer is 120°

[@riteshdahiyasir-kdckotadou5124]

Nope. Watch again

[@anshuaryangupta6844]

Hello

[@AasthaYadav-yk8qv]

Hie

[@anshuaryangupta6844]

Yee achaa idea hai naa

[@anshuaryangupta6844]

Baat karnee kaa 😂

[@AasthaYadav-js4dg]

Haan😂

[@AasthaYadav-js4dg]

Mastt👌

[@umatiwari308]

wrong answer sir

[@riteshdahiyasir-kdckotadou5124]

Nope

[@muheemkhan6084]

Toh theek aap bta do