Hello everyone, I already have answers to the three questions I'm asking but I just want to make sure I am right, Thank you for checking my answers.
1. What is the exact value of the trigonometric expression?
tan(7π4)
2√2
1
−2√2
−1
My answer= -1
2. What is the exact value of the trigonometric expression in simplest form?
sin(5π6)+2tan(7π4)
32
12+2√
12−2√
−32
My answer= -3/2
3.
θ lies in Quadrant II .
cosθ=−811cosθ=−811
What is the exact value of sinθ in simplified form?
−57√11
57√11
857√57
811
My answer= Honestly, for this one, I have no idea. Help me out?
