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Trigonometry || 17.03.2021

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Question 1

The value of  cos220° + cos270° is:

Question 2

Find tan25.tan35.tan45.tan45.tan55.tan65.

Question 3

The value of cosec230o + cos230o + 3sec245 ° ­- tan260o – 2cot245°.

Question 4

The least value of is

Question 5

What is the value of

Question 6

What is the value of [(cos7A + cos5A) ÷ (sin7A − sin5A)]?

Question 7

If the value of
is

Question 8

If   (0° < α < 60°), then the value of (sinα+cos2α) is:

Question 9

If are positive acute angles), then is equal to

Question 10

The value of (tanθ + cotθ) is?
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