Sin cos tan

In triangle ABC, right-angled at B.
Sides/AB/=7cm, /BC/=5cm, /AC/=8.6cm.
Find to two decimal places.
A. Sine C
B. Cosine C
C. Tangent C.

Correct answer:

S =  0.814
K =  0.5814
T =  1.4

Step-by-step explanation:

c=7 cm a=5 cm b=8.6 cm B=90 °  S=sinC=c:b S=cb=78.6=3543=0.814
K=cosC=a:b K=ab=58.6=2543=0.5814
T=tanC=c:a=sinCcosC T=ca=75=125=1.4=75=125=1.4   Verifying Solution:  b2=a2+c2=52+72=74 cm8.6023 cm

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Most natural application of trigonometry and trigonometric functions is a calculation of the triangles. Common and less common calculations of different types of triangles offers our triangle calculator. Word trigonometry comes from Greek and literally means triangle calculation.

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