Question

if 3 cot A = 4 , check whether 1-tan2A/ 1+tan2A = cos2 A - sin2 A or not . DON'T DARE TO SPAM , ITZ DANGER.

Answer 1

Answer: YOUR REQUIRED ANSWER ;-

cot A = 4/3

cot A = B / P = 3/4

* Tan A = P/B = 4 / 3

* cos A = B / H = 3 / 5

*SIN A = P/H = 4/5

According to question ,

1-tan²A / 1 + tan² = cos²A - Sin²A

1-(4/3)² / 1+ (4/3 )² = (3/5)²- (4/5)²

-7 /9 / 25/ 9 = (3+4)(3-4)/ (5)²

-7 / 9 × 9 / 25 = (3+4)(3-4)/25

-7/25 = -7/25

HENCE , LHS = RHS .

*

Explanation: hope this will help u ***** , need feedback plz ,

itz ADITYA ..

Answer 2

Answer:

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