Question

if in a triangle abc right angled at c tan b = 12by 5.find sin b​

Answer 1

Step-by-step explanation:



Maths



In a right angled triangle ABC, right angled at C, tanB = 2sinB , then sin A+sinB is equal to

A

23+1

B

3

C

21

D

1

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Correct option is

A

23+1

⇒Given:tanB=2sinB

⇒cosBsinB=2sinB

⇒cosB=21

⇒B=600

Therefore A=900−600=300

⇒sinA+sinB

=sin300+sin600

=21+