7.07 Trigonometric Identities
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Given sin(−θ)= 1/5 and tan θ = √6/12. What is the value of cos θ
-(2√6/5)
cos(−θ)= √3/4, sin θ <0 What is the value of sin θ?
-(√13/4)
The angle θ lies in Quadrant II. cos θ =−(2/3) What is tan θ?
-(√5/2)
Rita is proving that the following trigonometric identity is true: cos (-θ) 1 ---------- = ----- -sin θ tan θ Which would be a first correct line of her proof?
cos θ 1 -------- = - ------- - sin θ tan θ
The angle θ lies in Quadrant IV. sin θ= −(2/3) What is cos θ?
√5/3
