Question

In A ABC, ZB = 90°, AB = 35 cm and
BC = 12 cm. Find the values of following
T-ratios :
(1) sin A (2) cos A (3) sin C (4) cos C​

Answer 1

Answer:

Step-by-step explanation

Let BC=xcm.then,AC=(x+1)cm.

By pythagoras' theorem , we have

AB2+BC2=AC2

⇒72+x2=(x+1)2

⇒49+x2=(x−1)2

⇒49+x2=x2+2x+1

⇒2x=48

⇒x=24.

∴BC=24cm,AC=25cmandAB=7cm.

For T-ratios of ∠A, we have

sinA=BCAC=2425andcosA=ABAC=725.

For T- ratios of ∠C, we have

sinC=ABAC=725andcosC=BCAC=2425.

Answer 2

Answer:

(1) 12/37

(2)35/37

(3)35/37

(4)12/37