Math, asked by ShanayaPatil666, 3 months ago

if sec A= 5/4 prove that Cos^2 A=1-sin^2 A​

Answers

Answered by veenagoswami65
2

Answer:

cos²A + sin²A is always one

Step-by-step explanation:

cos²A = b²/h²

sin²A= p²/h²

now we get

p²+b²/h². (p²+b²=h²)

then h²/h²

so answer is 1

Answered by singhabulti330
2

Step-by-step explanation:

1-sin²A=sin²+cos²A-sin²A

=cos²A(proved)

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