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Popular >

5tan^2(45)+2sec^2(45)

Solution

5 tan^{2} (4 5^{\circ}) + 2 sec^{2} (4 5^{\circ})

Solution

9

Solution steps

5 tan^{2} (4 5^{\circ}) + 2 sec^{2} (4 5^{\circ})

Use the following trivial identity:

tan (4 5^{\circ}) = 1

Use the following trivial identity:

sec (4 5^{\circ}) = 2

= 5 \cdot 1^{2} + 2 (2)^{2}

Simplify

5 \cdot 1^{2} + 2 (2)^{2} : 9

= 9

Popular Examples

4 - sin (3)

csc (7 4^{\circ})

1 cos (\frac{π}{2})

cos (2.4)

csc (\frac{- 9 π}{4})

Frequently Asked Questions (FAQ)

What is the value of 5tan^2(45)+2sec^2(45) ?
The value of 5tan^2(45)+2sec^2(45) is 9