Question

If 3tanA=4,find;

(i)SinA
(ii)CosA
(iii)Sin^2A+Cos^2A​

Answer 1

Step-by-step explanation:

As 3tanA=4

tanA=4/3(tan =p/b)

ratio of p/b=4/3(p=4;b=3)

hopotenous=√(4²+3²)=√(16+9)=√25=5=h

I)sinA=p/h=4/5=0.8

ii)cosA=b/h=3/5=0.6

iii) sin²A+cos²A=1(Identity:-sin²A+cos²A=1)

Answer 2

Answer:

★ Sin A - 4/5

Cos A - 3/5

Sin² A + Cos² A - 1

Step-by-step explanation:

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