Questions
If A sin = 3 and A cos = 4,then select correct alternatives.
(i) A = 5 (ii) A = 7
(iii) = 37° (iv) = 53°
a
(i, ii}
b
(ii, iv)
c
(i, iii)
d
(ii, iii)
detailed solution
Correct option is C
A sinθ = 3 and A cos θ = 4⇒ A2(sin2θ + cos2θ) = 32 + 42A2 = 25⇒A = 5Also tanθ =34 ⇒ θ = 37°Talk to our academic expert!
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