Question 46

If Tan θ = 9/40, then Sec θ = ?

Solution

Tan θ = 9/40

W.K.T

$$sec^{2}θ=1+tan^{2}θ=1+(81/1600)=1681/1600$$

$$\Rightarrow secθ=41/40$$ ($$\because 41^2 = 1681$$)

so the answer is option C.


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