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Case study-2: There are in total six tri...

Case study-2: There are in total six trignometric ratios, namely sine(sin), cosine (cos), tangent (tan), cosecant (cosec), secant(sec) and cotagent(cot). The trigonometric fuctions cosecant. Secant and cotagent are simply the reciprocals of teh trigonometric fuctions sine, cosine and tangent for the angles of a triangle. The values of these trigonometric ratios gives a certain rational for some values of angle (say, `alpha`). Some such values for the angle of triangle are shown in the table below:


If `alpha=90^@` and `beta=60^@`, determine the value of `sin^2alpha+sin^2beta`.

A

`4/5`

B

`3/5`

C

`7/4`

D

`5/3`

Text Solution

Verified by Experts

The correct Answer is:
C
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