Question

In the figure 8.15,.LPQR = 90°,
ZPQS = 90°, ZPRQ = a and ZQPS
Write the following trigonometric rat
(i) sin a, cos a, tan a
(ii) sin 0, cos , tan
​

Answer 1

QUESTION:-

<PQR = 90°,<PQS = 90°, ZPRQ = a and ZQPS=∅

Write the following trigonometric ratios.

(i) sin a, cos a, tan a

(ii) sin ∅,cos∅ , tan∅

CONCEPT :-

1.sin ratio = perpendicular/hypotenuse.

2.cos ratio =base/hypotenuse.

3.tan ratio = perpendicular/base.

SOLUTION:-

ACCORDING TO DIAGRAM ,

_____________

1. sin a = PQ/PR

2.cos a =QR/PR

3.tan a =PQ/QR

_____________

ACCORDING TO DIAGRAM,

_____________

1. sin ∅ = QR/PR

2.cos ∅ = QP /PR

3.tan ∅ =QR /QP

_____________

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