Home > Maths I > Measure and Shape > Trigonometry
Maths I
Trigonometry
Important. Set your calculator to 'degrees'.
Calculate .
First label the sides.
Form trig ratio:
Change ratio to a decimal number:
Leave decimal number on the screen of your calculator. Key '' or ''.
Solution -
(to one decimal place)
Calculate. Give your answer to one decimal place.
(to one decimal place)
Sometimes you will use , sometimes and sometimes .
Hint: Show all working, especially when you use a calculator.
The examiner must see that you have understood the mathematics.
Calculate. Give your answer to one decimal place.
Calculate. Give your answer to one decimal place.
Calculate. Give your answer to one decimal place.
Calculate. Give your answer to one decimal place.
If you managed this you are doing really well. If you are still unsure, go over the questions again.
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