Trigonometry

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Question 1
Which of the following is NOT true?
Which of the following is NOT true?

Question 2
Which of the following is NOT correct?

Question 3
True or false?
[tex] \sin 25^\circ + \sin 65^\circ = \sin 90^\circ [/tex]?

Question 4
Which of the following is correct for all values of [tex] \theta [/tex]?

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

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

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

Question 8
Calculate [tex] \sin 37^\circ + \cos 53^\circ = ?[/tex]

Question 9
Let [tex] \sin \theta =0.2 [/tex] and [tex]0 \le \theta \le 90^\circ[/tex]. Find [tex]\cos ^2 \theta = ?[/tex]

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


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