Q22 of 303 Page 4

Answer each of the following questions in one word or one sentence or as per exact requirement of the question:

Write the value of .


Given cos2 (1/2 cos-1 3/5)


We know that







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20

Answer each of the following questions in one word or one sentence or as per exact requirement of the question:

Write the value of .


 21

Answer each of the following questions in one word or one sentence or as per exact requirement of the question:

Write the value of cos–1(cos 350°) – sin–1(sin 350°).


 23

Answer each of the following questions in one word or one sentence or as per exact requirement of the question:

If , then write the value of x + y + xy.


 24

Answer each of the following questions in one word or one sentence or as per exact requirement of the question:

Write the value of cos–1 (cos 6).