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Questions and Answers
কোনটি সঠিক?
কোনটি সঠিক?
- কোস 2θ = সিন 2θ
- কোস 2θ = সিন θ
- কোস 2θ = 1 - সিন 2θ (correct)
- কোস 2θ = 1 + সিন θ
যদি 2θ = 30 ডিগ্রি হয়, তবে θ এর মান কত?
যদি 2θ = 30 ডিগ্রি হয়, তবে θ এর মান কত?
- 45 ডিগ্রি
- 15 ডিগ্রি (correct)
- 60 ডিগ্রি
- 30 ডিগ্রি
What is the value of $2\theta$ if $\theta = \frac{\pi}{6}$?
What is the value of $2\theta$ if $\theta = \frac{\pi}{6}$?
- $\frac{\pi}{12}$
- $\frac{\pi}{2}$
- $\frac{\pi}{3}$ (correct)
- $\frac{\pi}{4}$
What is the value of $\sin^2\theta + \cos^2\theta$?
What is the value of $\sin^2\theta + \cos^2\theta$?
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What is the value of $\tan\theta$ if $\sin\theta = \frac{3}{5}$?
What is the value of $\tan\theta$ if $\sin\theta = \frac{3}{5}$?
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What is the value of $\cos 2\theta$ if $\sin\theta = \frac{1}{2}$?
What is the value of $\cos 2\theta$ if $\sin\theta = \frac{1}{2}$?
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What is the value of $\sin 2\theta$ if $\cos\theta = -\frac{1}{2}$?
What is the value of $\sin 2\theta$ if $\cos\theta = -\frac{1}{2}$?
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