# Trigonometry

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Question 1
Which of the following is NOT true?

Question 2
Which of the following is NOT correct?

Question 3
True or false?
$$\sin 25^\circ + \sin 65^\circ = \sin 90^\circ$$?

Question 4
Which of the following is correct for all values of $$\theta$$?

Question 5
In the triangle‎ $$ABC$$, $$\sin B= x$$. What is the value of $$\cos C$$?

Question 6
If $$\tan \theta = \frac{4}{3}$$ and $$0 \le \theta \le 90^\circ$$, what is the value of $$\cos \theta$$?

Question 7
If $$\sin \theta = \frac{12}{13}$$, what is the value of $$\cot \theta$$?

Question 8
Calculate $$\sin 37^\circ + \cos 53^\circ = ?$$

Question 9
Let $$\sin \theta =0.2$$ and $$0 \le \theta \le 90^\circ$$. Find $$\cos ^2 \theta = ?$$

Question 10
If $$\tan \theta =\frac{\sqrt{2}}{2}$$, what is the value of $$\cot \theta$$?

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