Secant Square x Formula

The function of an angle i.e the angles and sides relationships is given by trigonometric functions. Sine, cosine, tangent, cotangent, cosecant, secant are the six trigonometric functions. We have different trigonometric values for these trigonometric function for various angles like 30 0, 600 etc.

To classify the trigonometric functions, the angles of Sine, cosine and tangent are the primary ones.

Sec2 x formula

Sec 2 x = 1 + tan2 x

Examples of Cos squared theta formula

What is the value of sec square x, if tan x = ⅗?

Solution: Sec 2 x = 1 + tan2 x

= 1 + (⅗)2

= 1 + 9/25

= (25 + 9) / 25

= 34/25

Cos x = 34/25

What is the value of Sec square x, if tan x = 4/5?

Solution: Sec 2 x = 1 + tan2 x

= 1 + (4/5)2

= 1 + 16/25

= (41) / 25

= 41/25

Cos x = 4125

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Practise This Question

In a population of 1000 individuals 360 belongs to genotype AA, 480 to Aa and the remaining 160 to aa. Based on this data, the frequency of allele A in the population is 

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