Question

Prove that:
This question is related to Class 10 CBSE (CH- Introduction to Trigonometry)
Please answer it quickly.​

Answer 1

Step-by-step explanation:

LHS =

cosA/1 - tan A - sin^2 A/cosA - SinA

1 - tanA is 1 - sinA/cosA or (cosA-sinA)/ cosA

substituting 1 - tanA value

Cos^2/ cosA - sinA - sin^2 A/cosA - SinA

or

(cos^2 A - sin^2 A) / cos A - Sin A

that is

(cos A - sin A) * (cos A + sin A) / cos A - Sin A

cos A - Sin A gets cancelled out

so, we get

cos A + Sin A

LHS = RHS

Hence, Proved

Answer 2

Answer:

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