Question

Given tan a is 3/4 find the value of sin a and cos a

Answer 1

if tan a= 3/4

then, perpendicular is 3 and base is 4

then by Pythagoras theorem,

(hypotenuse)^2 = ( perpendicular)^2+( base)^2

so hyp ^ 2 = 9+ 16

hyp^2= 25

or,hyp=✓25

hyp = 5..

therefore, sin A= perpendicular/ hypotenuse

sinA= 3/5 ans....

and, cosA= base/ hypotenuse

cosA= 4/5 answer ..

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Answer 2

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