Question

prove that
(tan a + cot a)2 = sec2 a. cosec2 a​

Answer 1

Step-by-step explanation:

LHS= (tan a +cot a)²

(sina/cosa + cosa/sina)²

(sina+cosa/cosa sina)²

sin²a+cos²a/cos²a sin²a

1/cos²a sin²a

1/cos²a × 1/sin²a

sec²a. cos²a :( 1/cosa = seca and 1/sina = coseca) = rhs

Answer 2

Answer:

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