DISCUSSION- In today's class 10 math exam in set 3, is question 15 (or part) wrong? Shouldn't tan(A+B)=1/root 3? in the paper however it is 1. Also in set 3 is question 22 wrong?
satgupta23:
Are u talking about 22 ques.. In which we have to find mean?.. In that ques.. Total frequency was given 100 but actually total frequency was 110
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I got SET 1.
The question was correct.
Tan(A+B) =1
Tan(A-B) =1/,√3
This is the correct question.
A = 37.5°
B = 7.5°
Plz mark my ans as the brainliest.
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You didn't need to divide
You just had to substitute 1 =tan45° and 1/√3 = tan 30°
On equating you get A+B=45
A-B=30
Yeah most probably as the CBSE States that a number in fractions or roots should be converted into decimal number
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