Q2 of 46 Page 284

Choose the right option and justify your choice -

A)


A. sin 60°


B. cos 60°


C. tan 30°


D. sin 30°

we know,

tan 30° = 1/√3


tan 45° = 1


Then, putting these values in the question, we get



⇒


And we know, tan 30° = 1/√3


But, sin 60° = √3/2


cos 60° = 1/2


& sin 30° = 1/2


Thus, option (C) is correct.

More from this chapter

All 46 →
1

Evaluate the following.

D. 2tan2 45° + cos2 30° - sin2 60°

 1

Evaluate the following.

E.

2

Choose the right option and justify your choice -

B)


A. tan 90°


B. 1


C. sin 45°


D. 0

 2

Choose the right option and justify your choice -

C)


A. cos 60°


B. sin 60°


C. tan 60°


D. sin 30°