We could make use of a scientific calculator to obtain the trigonometric value of an angle. (Your calculator may work in a slightly different way. Please check your manual.)
Example:
Find the value of cos 6.35˚.
Solution:
Press
<cos 6.35˚ = 0.9939 (correct to 4 decimal places)
Example:
Find the value of sin 40˚ 32’.
Solution:
sin 40˚ 32’ = 0.6499 (correct to 4 decimal places)
Example:
Find the value of x for the following triangle. (Give your answer correct to 4 decimal places)
Solution:
x = 6.21 × sin 31.3˚ = 3.2262
Finding trig ratios and angles using your calculator
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