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CBSE 10th Previous Years Maths Question Paper Trigonometry Part I

187 views · Published 2 July 2017 · 7:37 · Indexed 2 October 2026

Channel: Dilip Thakur · 2017 · People & Blogs

If  tan⁡A=1/2,find the value of  (Cos A)/(Sin A)+(Sin A)/(1+CosA)
This can be solved by using Pythagoras theorem 
tan⁡A=1/2 
 
Now Sin A= 1/√5    and Cos A=2/√5 Substituting the values we get (Cos A)/(Sin A)+(Sin A)/(1+CosA)=√5
Using identity also , this can be solved 
(Cos A)/(Sin A)+(Sin A)/(1+CosA)=(Cos A(1+CosA)+〖Sin〗^2 A)/(Sin A(1+CosA) )=1/(Sin A)=Cosec A= √5

CBSE 10th Previous Years Maths Question Paper Trigonometry Part I

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