A possible value of tan14sin-1638 is:
122
17
7-1
22-1
Explanation for the correct option:
Step 1: Find the cos value of the given angle:
Use sin-1638 to find cos value.
sin-1638=θsinθ=638cosθ=18
Step 2: Express cos in terms of tan:
Use trignometric identities to get the required value.
2cos2θ2-1=18cosθ2=34⇒1-tan2θ41+tan2θ4=34∴tanθ4=17
Hence, option (B) is the correct answer.
Value of sin[1/4arc sin((√63)/8)