Question

if sinA=. 5 what is the value of cosA

Answer 1

Hii Dear.......
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We know that SinA = Perpendicular / Hypotenuse
so , SinA = 5/1
>> By PGT ,
H^2 = P^2 + B^2
1^2 = 5^2 + B^2
1 = 25 + B^2
1- 25 = B^2
-24 = B^2
√-24 = B
-2√6 = B
:- Base => -2√6
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And we know that CosA = B/H
= -2√6
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