Step-by-step Answer
PAGE: 289SET: ExercisesPROBLEM: 41
Please look in your text book for this problem Statement

The expression is .

Rewrite the expression


Consider   then .

The expression can be written as

Here and .

Pythagoras rule : .


Therefore .

Hence  .

Substitute in the expression .

The expression is 

Property of inverse trigonometry functions : .

The exact value of expression is .

The exact value of expression is .


"I want to tell you that our students did well on the math exam and showed a marked improvement that, in my estimation, reflected the professional development the faculty received from you. THANK YOU!!!"

June Barnett

"Your site is amazing! It helped me get through Algebra."


"My daughter uses it to supplement her Algebra 1 school work. She finds it very helpful."

Dan Pease

Simply chose a support option

My status

JOIN US ON:     
mathskey.com is not affiliated with any Publisher, Book cover, Title, Author names appear for reference only