Question

Answer the 5 th question

Answer 1

Question

Evaluate and find the value of the question.

5(cot^2 30°) + 7(cosec^2 45°)

ANSWER

5(cot^2 30°) + 7(cosec^2 45°)

=>5{(root 3)^2} + 7{(root 2)^2}

=>5(3) + 7(2)

=>15 + 14

=>29

HENCE the value of the of the given question is 29.

REMEMBER

Some trigonmetric ratios=>>

1)SinA = 1/CosecA

2)CosA = 1/SecA

3)TanA = 1/CotA

4)Sin^2 A + Cos^2 A = 1

5) Cosec^2 A - Cot^2 A = 1

6) Sec^2 A - Tan^2 A = 1

where A is any angle.

It can be denoted by greek letter theta also.

Here we used the trigonnomerty table of values for putting the value of different ratios.

thanks