if sinA= 3by4 find the value of (a)cosA (b) tara, (c) cotA Answer
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Answer:
Cos A = √7/4
Tan A = 3/√7
Cosec A = 4/3
Sec A = 4/√7
Cot A = √7/3
Step-by-step explanation:
Sin A = 3/4
BC/AC = 3x/4x
In ∆ABC
AB^2 + BC ^2 = AC^2
AB^2 + ( 3x)^2 = ( 4x )^2
AB^2 = 7x^2
AB = √7x
Cos A = AB/AC = √7/4
Tan A = BC/AB = 3/√7
Cosec A = AC/BC = 4/3
Sec A = AC/AB = 4/√7
Cot A = AB/BC = √7/3
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