Math, asked by cpsharma3459, 11 months ago

Prove that cos^2(45+A)+cos(45-A) = yan(60+A)tan (30-A)

Answers

Answered by spiderman2019
0

Answer:

Step-by-step explanation:

Cos²(45+A)+cos²(45-A) = Tan(60+A)Tan (30-A)

=> Cos²(45+A)+cos²(45-A)/Tan(60+A)Tan (30-A) = 1

L.H.S:

Cos²(45+A) + SIn²(90 - 45 +A)/Tan(60+A). Cot (90 - 30+A)

= Cos²(45+A) + Sin²(45+A)/Tan(60+A). Cot (60+A)

= 1

= R.H.S

Hence proved.

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