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If sinA = 3/4 find the value of cosA and TanA

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If sinA = 3/4 find the value of cosA and TanA
1. cosA = √7/4, TanA = 3/√7
2. cosA = √3/4, TanA = 2/5
3. cosA = 1/2, TanA = 3/4
4. cosA = 4/√7, TanA = 4/3
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Correct Answer - Option 1 : cosA = √7/4, TanA = 3/√7

Given

sinA = 3/4

Concept used

CosA = Base / Hypotenus

TanA = Perpendicular / Base

SinA = Perpendicular / Hypotenus

Calculation

sinA = 3/4

SinA = Perpendicular / Hypotenus

Hypotenus2 = Base2 + perpendicular2

Base2 = 16 - 9

Base = √7

CosA = Base / hypotenus

CosA = √7/4

TanA = perpendicular / Base

TanA = 3/√7

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