if in triangle ABC, right angle C=90 degree ,then sin (a+b)=?
a)0. b)1/2. c)1/root2. d)1
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Answered by
61
Answer:
Option D
Step-by-step explanation:
A+B+C = 180°
A+B=180°-90°=90°
Sin(A+B)= Sin(90°)=1
Answered by
15
Given : in triangle abc, angle c=90°
To Find : sin(a+b)
Solution:
In any triangle sum of all angles of triangle is 180°
Hence ∠a + ∠b + ∠c = 180°
∠c = 90° given
=> ∠a + ∠b + 90° = 180°
=> ∠a + ∠b = 90°
sin(a+b) = Sin (90°)
=> sin(a+b) = 1
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