Question

can anyone please answer this........​....!!!!
it's urgent.....

Answer 1

Answer:

answer is simple

Step-by-step explanation:

As sin2 A + cos2A = 1.... it is the identity no1 of trigonometry

cot2A = cosec2A –1... is the reverse of identity no 2 of trigonometry that " 1 + cot2A = cosec2A

Answer 2

Answer:

Step-by-step explanation:

as per the given question we know that sin2A +cos2A = 1                                   cot2A = cosec2A-1                                                                                                    cos2A/sin2A = 1/sin2A - 1                                                                                        cos2A/sin2A = 1-sin2A/sin2A                                                                                   cos2A = 1-sin2A                                                                                                         cos2A+sin2A = 1                                                                                                        hence proved because already they gave sin2A+cos2A =1