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If triangle abc is right angled …

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If triangle abc is right angled at c, then the value of Cos (A + B) a)0 b)1 c)1/2 d)√3/2

Posted by ? Royal Thakur ? 5 years, 8 months ago

CBSE > Class 10 > Mathematics

16 answers

Śěřãj The Cute? 5 years, 8 months ago

Ro

? Royal Thakur ? 5 years, 8 months ago

But thank you so much...???

? Royal Thakur ? 5 years, 8 months ago

Pta nhi aadu ye app he bekar aur bhut slow bhi...

Śěřãj The Cute? 5 years, 8 months ago

????????????

Śěřãj The Cute? 5 years, 8 months ago

Hii adya

Śěřãj The Cute? 5 years, 8 months ago

Kya hua mujhse kya galti ho gayi royal bro

Aadya Singh 5 years, 8 months ago

Niche wala to solution to mera gya nhi tha...error occurred ho gya tha ??phir kaise show kar rha h...??? ??

Śěřãj The Cute? 5 years, 8 months ago

Hiii bro

Aadya Singh 5 years, 8 months ago

A + B + C = 180 => A + B + 90 = 180 => A + B = 90°
Now, Cos (A+B) => Cos 90 => 0

Aadya Singh 5 years, 8 months ago

Angle (A + B + C) = 180°
=> Angle (A + B + 90°) = 180°
=> Angle (A + B) = 90°
Now, Cos (A + B) => Cos 90° => 0

Śěřãj The Cute? 5 years, 8 months ago

Because c=90 Sum of triangale angle is 180 A+b+c =180 A+b+90 =180 A+b =90 Cos (a+b)=cos90 O

Aditya Raj Gupta 5 years, 8 months ago

0

Aadya Singh 5 years, 8 months ago

a) 0

? Royal Thakur ? 5 years, 8 months ago

Please give full solution....

? Royal Thakur ? 5 years, 8 months ago

How ❓

Siddharth Rao 5 years, 8 months ago

0

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