Trigonometric Tables
ICSE · Class 10 · Mathematics
Flashcards for Trigonometric Tables — ICSE Class 10 Mathematics. Quick Q&A cards covering key concepts, definitions, and formulas.
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Get startedConvert 20.6° into degrees and minutes.
Answer
Step 1: Split the whole number and decimal part. 20.6° = 20° + 0.6° Step 2: Convert 0.6° into minutes using 1° = 60'. 0.6 × 60 = 36' Step 3: Combine the result. Answer: 20°36'…
Convert 12.54° fully into degrees, minutes, and seconds.
Answer
Step 1: Split the decimal degree. 12.54° = 12° + 0.54° Step 2: Convert 0.54° into minutes. 0.54 × 60 = 32.4' Step 3: Split 32.4' into 32' and 0.4' Step 4: Convert 0.4' into seconds using 1' = 60''. 0.
Convert 18°45' into decimal degrees.
Answer
Step 1: Convert minutes into degrees. 45' = 45/60° = 0.75° Step 2: Add to the whole degree part. 18° + 0.75° = 18.75° Answer: 18.75°…
How many seconds are there in 3' ?
Answer
Step 1: Use 1' = 60''. Step 2: Multiply by 3. 3 × 60 = 180'' Answer: 180 seconds…
When do you use the trigonometric table for sine, cosine, and tangent?
Answer
Use the trigonometric table to find approximate values of sine, cosine, and tangent for angles between 0° and 90°. The values are correct up to four places of decimals. Example idea: if a value is nee…
What is the structure of a trigonometric table?
Answer
Step 1: The first column on the extreme left contains degrees from 0° to 90°. Step 2: The table has ten main columns headed by minute values. Step 3: The table also has five mean difference columns he…
What are the main minute headings used in the trigonometric table?
Answer
The main minute headings are: 0', 6', 12', 18', 24', 36', 42', 48', 54' These are the minute columns used for reading approximate values from the table.
Why are mean difference columns used in trigonometric tables?
Answer
Mean difference columns help correct the value to the fourth decimal place. If the function value increases as θ increases, the mean difference is added. If the function value decreases as θ increases…
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